The duties and responsibilities of the Master of Arms, MA3(E-4) in the U.S. Navy are quite varied and include:
MA3(E-4) Legal Duties
Read and explain Uniform Code of Military Justice (UCMJ) Article 31 to military suspectsInform accused of charges Inform personnel of captain’s masts/courts-martial (time, location, uniform) etTestify at official proceedings Enforce disciplinary actions awarded at courts-martial or captain’s masts Determine probable cause for command authorized searches Inform commands of personnel detained in custody
Law Enforcement and Investigations
Recommend individual sources of information (informers) Conduct authorized searchesConduct surveillanceIdentify narcotics and dangerous drugsApprehend suspectsIssue weapons and ammunitionConduct field sobriety testsAdminister Breathalyzer tests
Evidence
Secure crime/accident scenes Inspect crime/accident scenesPreserve evidence at crime scenes Seize evidence/contraband Mark and tag evidence/contraband Maintain chain of custody formsPreserve evidence chain of custody
Physical Security
Control access points to security areas Stow weaponsSafeguard keysMonitor alarm systemsTest alarm systems Respond to alarms Monitor Master-at-Arms (MAA) communications systems Respond to bomb threats Transmit and receive with two-way radios Dispatch security personnelConduct quarterdeck inspections Conduct gate inspectionsConduct building checks Conduct security lighting checks Conduct perimeter checks
Vehicles
Drive emergency vehiclesIssue temporary vehicle passesControl official use of government vehicles Investigate abandoned vehiclesDirect traffic (vehicle/pedestrian)Issue traffic citationsInvestigate vehicle accidentsDetermine vehicle speed with radar systemsInventory emergency vehicle equipment
General Duties of Master at Arms
Monitor daily muster report for unauthorized absentees (UA)Control personnel lines (ship’s store, pay, etc.) Monitor liberty parties Issue uniform deficiency slipsMuster restricted personnelRestrain personnel Engrave personal property Conduct inspections to ensure sweepers, taps, and reveille are held Conduct security inspectionsProvide security escort services Provide assistance on crime control or prevention programs Shipboard brig security and support Process prisoners upon receipt Escort and guard prisonersShakedown and frisk personnelCollect uniforms/government property from personnel discharged for disciplinary reasons
Technical Administration
Prepare incident/complaint reports Prepare traffic accident reportsPrepare voluntary statements (witness) Prepare civilian suspects acknowledgement and waiver of rights Prepare and process permissive authorization for search and seizure Fill out and process military suspects’ acknowledgement and waiver of rights formsFill out telephonic threat/complaints formsFill out evidence tags (index or adhesive) Maintain and process desk journalsFill out and process field interview cardsPrepare and process evidence/property custody documents Maintain and process law enforcement communications logsPrepare fingerprint cards (major case prints) Prepare and process non-government vehicle registrationsPrepare armed forces traffic reportsProcess violation reportsPrepare alcohol influence reports Prepare disposition of offenses reportsPrepare complaint of stolen motor vehicle reports Prepare vehicle reportsFill out line-up acknowledgement and waiver of rights forms Prepare and process investigative notes Maintain and process interview/interrogation logsFill out and process command authorization for search and seizure forms Fill out and process customer consent and authorization for access to financial information forms Process authorization to release medical information and records Inventory personal effects of deceased or deserted personnel
MA2 (E-5) Duties
These include all the duties of the MA3 (E-4) plus:
Legal
Officiate at executive officer’s inquiry (XOI) Maintain order at courts-martial and captain’s masts Brief prosecuting/defense attorneys Inform commands of civil sentences awarded to personnel
Law Enforcement and Investigation
Conduct military customs inspections Identify personnel by photographs, drawings, or line-ups Conduct and record interrogations and interviews
Evidence
Safeguard evidence as evidence custodian Prepare and submit evidence/contraband for testing Dispose of evidence/contrabandConduct field tests for drugsPrepare field test reportsWitness chemical tests
Physical Security
Inventory safe contents Conduct physical security surveys Brief command on security programs
Vehicles
Prepare report of abandoned vehicles Coordinate towing of vehicles
General Duties
Implement key control programsCoordinate missing, lost, stolen and recovered (MLSR) programs
Technical Administration
Register personal property Process civilian suspects’ acknowledgement and waiver of rights Process telephonic threat/complaint forms Process Armed Forces traffic reports Prepare violation reports Process alcohol influence reports Process complaint of stolen motor vehicle reports Process vehicle reports Maintain and process evidence logs Prepare for disposition of abandoned, recovered, and impounded personal property Provide technical assistance in preparing report chitsProcess report chitsPrepare confinement ordersPrepare “Hot List” on items reported stolen
MA1 (E-6) Duties
Duties include all the above, plus:
Legal Responsibilities
Officiate at captain’s mastsInform accused of appeal rights
Law Enforcement and Investigations
Investigate cases involving drugs, alcohol and irrational behavior Recruit individual sources of information (informers) Coordinate detector dog searchesMonitor U.S. Customs inspectionsConduct suspect line-ups
Evidence
Package and mail controlled substances for testing
Physical Security
Mark items with detection powders Inspect safes/repositories for security violations Direct riot controlReview and report results of physical security inspections Develop command physical security plansImplement command physical security plans Develop plan of action and milestones (POA&M) to correct physical security deficiencies
General Duties
Establish and monitor beach guard Monitor security guard force Brief shipboard shore patrol personnel Develop and monitor a crime prevention program Conduct a facility/activity crime prevention program Implement loss prevention and analysis programs
Technical Administration
Prepare authorization to release medical information and recordsPrepare crime lab examination requests Prepare forensic examination requests Process forensic examination requests Prepare and process investigative notes envelopes Prepare and process field test results Review incident/complaint reports Prepare and implement security department standard operating procedures Prepare crime statistical reportsScreen command investigative summaries and complaint reports for accuracy/completeness Prepare records for alcohol, narcotics, and drug testsPrepare reports/graphs of offenses Provide administrative assistance to other law enforcement agencies
MAC (E-7) Duties
The MAC (E-7) supervises/manages personnel performing above duties, plus:
Physical Security
Brief command on additional security requirements for ships Brief command on upgrading threat conditions Brief command on employment of auxiliary security force (ASF)
Technical Administration
Review investigative reports
The duties and responsibilities of the Master of Arms, MA3(E-4) in the U.S. Navy are quite varied and include:
MA3(E-4) Legal Duties
Read and explain Uniform Code of Military Justice (UCMJ) Article 31 to military suspectsInform accused of charges Inform personnel of captain’s masts/courts-martial (time, location, uniform) etTestify at official proceedings Enforce disciplinary actions awarded at courts-martial or captain’s masts Determine probable cause for command authorized searches Inform commands of personnel detained in custody
Law Enforcement and Investigations
Recommend individual sources of information (informers) Conduct authorized searchesConduct surveillanceIdentify narcotics and dangerous drugsApprehend suspectsIssue weapons and ammunitionConduct field sobriety testsAdminister Breathalyzer tests
Evidence
Secure crime/accident scenes Inspect crime/accident scenesPreserve evidence at crime scenes Seize evidence/contraband Mark and tag evidence/contraband Maintain chain of custody formsPreserve evidence chain of custody
Physical Security
Control access points to security areas Stow weaponsSafeguard keysMonitor alarm systemsTest alarm systems Respond to alarms Monitor Master-at-Arms (MAA) communications systems Respond to bomb threats Transmit and receive with two-way radios Dispatch security personnelConduct quarterdeck inspections Conduct gate inspectionsConduct building checks Conduct security lighting checks Conduct perimeter checks
Vehicles
Drive emergency vehiclesIssue temporary vehicle passesControl official use of government vehicles Investigate abandoned vehiclesDirect traffic (vehicle/pedestrian)Issue traffic citationsInvestigate vehicle accidentsDetermine vehicle speed with radar systemsInventory emergency vehicle equipment
General Duties of Master at Arms
Monitor daily muster report for unauthorized absentees (UA)Control personnel lines (ship’s store, pay, etc.) Monitor liberty parties Issue uniform deficiency slipsMuster restricted personnelRestrain personnel Engrave personal property Conduct inspections to ensure sweepers, taps, and reveille are held Conduct security inspectionsProvide security escort services Provide assistance on crime control or prevention programs Shipboard brig security and support Process prisoners upon receipt Escort and guard prisonersShakedown and frisk personnelCollect uniforms/government property from personnel discharged for disciplinary reasons
Technical Administration
Prepare incident/complaint reports Prepare traffic accident reportsPrepare voluntary statements (witness) Prepare civilian suspects acknowledgement and waiver of rights Prepare and process permissive authorization for search and seizure Fill out and process military suspects’ acknowledgement and waiver of rights formsFill out telephonic threat/complaints formsFill out evidence tags (index or adhesive) Maintain and process desk journalsFill out and process field interview cardsPrepare and process evidence/property custody documents Maintain and process law enforcement communications logsPrepare fingerprint cards (major case prints) Prepare and process non-government vehicle registrationsPrepare armed forces traffic reportsProcess violation reportsPrepare alcohol influence reports Prepare disposition of offenses reportsPrepare complaint of stolen motor vehicle reports Prepare vehicle reportsFill out line-up acknowledgement and waiver of rights forms Prepare and process investigative notes Maintain and process interview/interrogation logsFill out and process command authorization for search and seizure forms Fill out and process customer consent and authorization for access to financial information forms Process authorization to release medical information and records Inventory personal effects of deceased or deserted personnel
MA2 (E-5) Duties
These include all the duties of the MA3 (E-4) plus:
Legal
Officiate at executive officer’s inquiry (XOI) Maintain order at courts-martial and captain’s masts Brief prosecuting/defense attorneys Inform commands of civil sentences awarded to personnel
Law Enforcement and Investigation
Conduct military customs inspections Identify personnel by photographs, drawings, or line-ups Conduct and record interrogations and interviews
Evidence
Safeguard evidence as evidence custodian Prepare and submit evidence/contraband for testing Dispose of evidence/contrabandConduct field tests for drugsPrepare field test reportsWitness chemical tests
Physical Security
Inventory safe contents Conduct physical security surveys Brief command on security programs
Vehicles
Prepare report of abandoned vehicles Coordinate towing of vehicles
General Duties
Implement key control programsCoordinate missing, lost, stolen and recovered (MLSR) programs
Technical Administration
Register personal property Process civilian suspects’ acknowledgement and waiver of rights Process telephonic threat/complaint forms Process Armed Forces traffic reports Prepare violation reports Process alcohol influence reports Process complaint of stolen motor vehicle reports Process vehicle reports Maintain and process evidence logs Prepare for disposition of abandoned, recovered, and impounded personal property Provide technical assistance in preparing report chitsProcess report chitsPrepare confinement ordersPrepare “Hot List” on items reported stolen
MA1 (E-6) Duties
Duties include all the above, plus:
Legal Responsibilities
Officiate at captain’s mastsInform accused of appeal rights
Law Enforcement and Investigations
Investigate cases involving drugs, alcohol and irrational behavior Recruit individual sources of information (informers) Coordinate detector dog searchesMonitor U.S. Customs inspectionsConduct suspect line-ups
Evidence
Package and mail controlled substances for testing
Physical Security
Mark items with detection powders Inspect safes/repositories for security violations Direct riot controlReview and report results of physical security inspections Develop command physical security plansImplement command physical security plans Develop plan of action and milestones (POA&M) to correct physical security deficiencies
General Duties
Establish and monitor beach guard Monitor security guard force Brief shipboard shore patrol personnel Develop and monitor a crime prevention program Conduct a facility/activity crime prevention program Implement loss prevention and analysis programs
Technical Administration
Prepare authorization to release medical information and recordsPrepare crime lab examination requests Prepare forensic examination requests Process forensic examination requests Prepare and process investigative notes envelopes Prepare and process field test results Review incident/complaint reports Prepare and implement security department standard operating procedures Prepare crime statistical reportsScreen command investigative summaries and complaint reports for accuracy/completeness Prepare records for alcohol, narcotics, and drug testsPrepare reports/graphs of offenses Provide administrative assistance to other law enforcement agencies
MAC (E-7) Duties
The MAC (E-7) supervises/manages personnel performing above duties, plus:
Physical Security
Brief command on additional security requirements for ships Brief command on upgrading threat conditions Brief command on employment of auxiliary security force (ASF)
Technical Administration
Review investigative reports
The duties and responsibilities of the Master of Arms, MA3(E-4) in the U.S. Navy are quite varied and include:
MA3(E-4) Legal Duties
Read and explain Uniform Code of Military Justice (UCMJ) Article 31 to military suspectsInform accused of charges Inform personnel of captain’s masts/courts-martial (time, location, uniform) etTestify at official proceedings Enforce disciplinary actions awarded at courts-martial or captain’s masts Determine probable cause for command authorized searches Inform commands of personnel detained in custody
Law Enforcement and Investigations
Recommend individual sources of information (informers) Conduct authorized searchesConduct surveillanceIdentify narcotics and dangerous drugsApprehend suspectsIssue weapons and ammunitionConduct field sobriety testsAdminister Breathalyzer tests
Evidence
Secure crime/accident scenes Inspect crime/accident scenesPreserve evidence at crime scenes Seize evidence/contraband Mark and tag evidence/contraband Maintain chain of custody formsPreserve evidence chain of custody
Physical Security
Control access points to security areas Stow weaponsSafeguard keysMonitor alarm systemsTest alarm systems Respond to alarms Monitor Master-at-Arms (MAA) communications systems Respond to bomb threats Transmit and receive with two-way radios Dispatch security personnelConduct quarterdeck inspections Conduct gate inspectionsConduct building checks Conduct security lighting checks Conduct perimeter checks
Vehicles
Drive emergency vehiclesIssue temporary vehicle passesControl official use of government vehicles Investigate abandoned vehiclesDirect traffic (vehicle/pedestrian)Issue traffic citationsInvestigate vehicle accidentsDetermine vehicle speed with radar systemsInventory emergency vehicle equipment
General Duties of Master at Arms
Monitor daily muster report for unauthorized absentees (UA)Control personnel lines (ship’s store, pay, etc.) Monitor liberty parties Issue uniform deficiency slipsMuster restricted personnelRestrain personnel Engrave personal property Conduct inspections to ensure sweepers, taps, and reveille are held Conduct security inspectionsProvide security escort services Provide assistance on crime control or prevention programs Shipboard brig security and support Process prisoners upon receipt Escort and guard prisonersShakedown and frisk personnelCollect uniforms/government property from personnel discharged for disciplinary reasons
Technical Administration
Prepare incident/complaint reports Prepare traffic accident reportsPrepare voluntary statements (witness) Prepare civilian suspects acknowledgement and waiver of rights Prepare and process permissive authorization for search and seizure Fill out and process military suspects’ acknowledgement and waiver of rights formsFill out telephonic threat/complaints formsFill out evidence tags (index or adhesive) Maintain and process desk journalsFill out and process field interview cardsPrepare and process evidence/property custody documents Maintain and process law enforcement communications logsPrepare fingerprint cards (major case prints) Prepare and process non-government vehicle registrationsPrepare armed forces traffic reportsProcess violation reportsPrepare alcohol influence reports Prepare disposition of offenses reportsPrepare complaint of stolen motor vehicle reports Prepare vehicle reportsFill out line-up acknowledgement and waiver of rights forms Prepare and process investigative notes Maintain and process interview/interrogation logsFill out and process command authorization for search and seizure forms Fill out and process customer consent and authorization for access to financial information forms Process authorization to release medical information and records Inventory personal effects of deceased or deserted personnel
MA2 (E-5) Duties
These include all the duties of the MA3 (E-4) plus:
Legal
Officiate at executive officer’s inquiry (XOI) Maintain order at courts-martial and captain’s masts Brief prosecuting/defense attorneys Inform commands of civil sentences awarded to personnel
Law Enforcement and Investigation
Conduct military customs inspections Identify personnel by photographs, drawings, or line-ups Conduct and record interrogations and interviews
Evidence
Safeguard evidence as evidence custodian Prepare and submit evidence/contraband for testing Dispose of evidence/contrabandConduct field tests for drugsPrepare field test reportsWitness chemical tests
Physical Security
Inventory safe contents Conduct physical security surveys Brief command on security programs
Vehicles
Prepare report of abandoned vehicles Coordinate towing of vehicles
General Duties
Implement key control programsCoordinate missing, lost, stolen and recovered (MLSR) programs
Technical Administration
Register personal property Process civilian suspects’ acknowledgement and waiver of rights Process telephonic threat/complaint forms Process Armed Forces traffic reports Prepare violation reports Process alcohol influence reports Process complaint of stolen motor vehicle reports Process vehicle reports Maintain and process evidence logs Prepare for disposition of abandoned, recovered, and impounded personal property Provide technical assistance in preparing report chitsProcess report chitsPrepare confinement ordersPrepare “Hot List” on items reported stolen
MA1 (E-6) Duties
Duties include all the above, plus:
Legal Responsibilities
Officiate at captain’s mastsInform accused of appeal rights
Law Enforcement and Investigations
Investigate cases involving drugs, alcohol and irrational behavior Recruit individual sources of information (informers) Coordinate detector dog searchesMonitor U.S. Customs inspectionsConduct suspect line-ups
Evidence
Package and mail controlled substances for testing
Physical Security
Mark items with detection powders Inspect safes/repositories for security violations Direct riot controlReview and report results of physical security inspections Develop command physical security plansImplement command physical security plans Develop plan of action and milestones (POA&M) to correct physical security deficiencies
General Duties
Establish and monitor beach guard Monitor security guard force Brief shipboard shore patrol personnel Develop and monitor a crime prevention program Conduct a facility/activity crime prevention program Implement loss prevention and analysis programs
Technical Administration
Prepare authorization to release medical information and recordsPrepare crime lab examination requests Prepare forensic examination requests Process forensic examination requests Prepare and process investigative notes envelopes Prepare and process field test results Review incident/complaint reports Prepare and implement security department standard operating procedures Prepare crime statistical reportsScreen command investigative summaries and complaint reports for accuracy/completeness Prepare records for alcohol, narcotics, and drug testsPrepare reports/graphs of offenses Provide administrative assistance to other law enforcement agencies
MAC (E-7) Duties
The MAC (E-7) supervises/manages personnel performing above duties, plus:
Physical Security
Brief command on additional security requirements for ships Brief command on upgrading threat conditions Brief command on employment of auxiliary security force (ASF)
Technical Administration
Review investigative reports
The duties and responsibilities of the Master of Arms, MA3(E-4) in the U.S. Navy are quite varied and include:
MA3(E-4) Legal Duties
- Read and explain Uniform Code of Military Justice (UCMJ) Article 31 to military suspectsInform accused of charges Inform personnel of captain’s masts/courts-martial (time, location, uniform) etTestify at official proceedings Enforce disciplinary actions awarded at courts-martial or captain’s masts Determine probable cause for command authorized searches Inform commands of personnel detained in custody
Law Enforcement and Investigations
- Recommend individual sources of information (informers) Conduct authorized searchesConduct surveillanceIdentify narcotics and dangerous drugsApprehend suspectsIssue weapons and ammunitionConduct field sobriety testsAdminister Breathalyzer tests
Evidence
- Secure crime/accident scenes Inspect crime/accident scenesPreserve evidence at crime scenes Seize evidence/contraband Mark and tag evidence/contraband Maintain chain of custody formsPreserve evidence chain of custody
Physical Security
- Control access points to security areas Stow weaponsSafeguard keysMonitor alarm systemsTest alarm systems Respond to alarms Monitor Master-at-Arms (MAA) communications systems Respond to bomb threats Transmit and receive with two-way radios Dispatch security personnelConduct quarterdeck inspections Conduct gate inspectionsConduct building checks Conduct security lighting checks Conduct perimeter checks
Vehicles
- Drive emergency vehiclesIssue temporary vehicle passesControl official use of government vehicles Investigate abandoned vehiclesDirect traffic (vehicle/pedestrian)Issue traffic citationsInvestigate vehicle accidentsDetermine vehicle speed with radar systemsInventory emergency vehicle equipment
General Duties of Master at Arms
- Monitor daily muster report for unauthorized absentees (UA)Control personnel lines (ship’s store, pay, etc.) Monitor liberty parties Issue uniform deficiency slipsMuster restricted personnelRestrain personnel Engrave personal property Conduct inspections to ensure sweepers, taps, and reveille are held Conduct security inspectionsProvide security escort services Provide assistance on crime control or prevention programs Shipboard brig security and support Process prisoners upon receipt Escort and guard prisonersShakedown and frisk personnelCollect uniforms/government property from personnel discharged for disciplinary reasons
Technical Administration
- Prepare incident/complaint reports Prepare traffic accident reportsPrepare voluntary statements (witness) Prepare civilian suspects acknowledgement and waiver of rights Prepare and process permissive authorization for search and seizure Fill out and process military suspects’ acknowledgement and waiver of rights formsFill out telephonic threat/complaints formsFill out evidence tags (index or adhesive) Maintain and process desk journalsFill out and process field interview cardsPrepare and process evidence/property custody documents Maintain and process law enforcement communications logsPrepare fingerprint cards (major case prints) Prepare and process non-government vehicle registrationsPrepare armed forces traffic reportsProcess violation reportsPrepare alcohol influence reports Prepare disposition of offenses reportsPrepare complaint of stolen motor vehicle reports Prepare vehicle reportsFill out line-up acknowledgement and waiver of rights forms Prepare and process investigative notes Maintain and process interview/interrogation logsFill out and process command authorization for search and seizure forms Fill out and process customer consent and authorization for access to financial information forms Process authorization to release medical information and records Inventory personal effects of deceased or deserted personnel
MA2 (E-5) Duties
These include all the duties of the MA3 (E-4) plus:
Legal
- Officiate at executive officer’s inquiry (XOI) Maintain order at courts-martial and captain’s masts Brief prosecuting/defense attorneys Inform commands of civil sentences awarded to personnel
Law Enforcement and Investigation
Conduct military customs inspections Identify personnel by photographs, drawings, or line-ups Conduct and record interrogations and interviews
Safeguard evidence as evidence custodian Prepare and submit evidence/contraband for testing Dispose of evidence/contrabandConduct field tests for drugsPrepare field test reportsWitness chemical tests
Physical Security
Inventory safe contents Conduct physical security surveys Brief command on security programs
Prepare report of abandoned vehicles Coordinate towing of vehicles
General Duties
- Implement key control programsCoordinate missing, lost, stolen and recovered (MLSR) programs
Technical Administration
- Register personal property Process civilian suspects’ acknowledgement and waiver of rights Process telephonic threat/complaint forms Process Armed Forces traffic reports Prepare violation reports Process alcohol influence reports Process complaint of stolen motor vehicle reports Process vehicle reports Maintain and process evidence logs Prepare for disposition of abandoned, recovered, and impounded personal property Provide technical assistance in preparing report chitsProcess report chitsPrepare confinement ordersPrepare “Hot List” on items reported stolen
MA1 (E-6) Duties
Duties include all the above, plus:
Legal Responsibilities
- Officiate at captain’s mastsInform accused of appeal rights
Law Enforcement and Investigations
Investigate cases involving drugs, alcohol and irrational behavior Recruit individual sources of information (informers) Coordinate detector dog searchesMonitor U.S. Customs inspectionsConduct suspect line-ups
Package and mail controlled substances for testing
Mark items with detection powders Inspect safes/repositories for security violations Direct riot controlReview and report results of physical security inspections Develop command physical security plansImplement command physical security plans Develop plan of action and milestones (POA&M) to correct physical security deficiencies
Establish and monitor beach guard Monitor security guard force Brief shipboard shore patrol personnel Develop and monitor a crime prevention program Conduct a facility/activity crime prevention program Implement loss prevention and analysis programs
Prepare authorization to release medical information and recordsPrepare crime lab examination requests Prepare forensic examination requests Process forensic examination requests Prepare and process investigative notes envelopes Prepare and process field test results Review incident/complaint reports Prepare and implement security department standard operating procedures Prepare crime statistical reportsScreen command investigative summaries and complaint reports for accuracy/completeness Prepare records for alcohol, narcotics, and drug testsPrepare reports/graphs of offenses Provide administrative assistance to other law enforcement agencies
MAC (E-7) Duties
The MAC (E-7) supervises/manages personnel performing above duties, plus:
Brief command on additional security requirements for ships Brief command on upgrading threat conditions Brief command on employment of auxiliary security force (ASF)
Review investigative reports
