Security & Law Enforcement (Master-at-Arms)

About the Role

Master-at-Arms (MA) Sailors form the backbone of the Navy's security, antiterrorism, and law enforcement capabilities. Their mission is to protect people, installations, ships, and strategic assets both at home and abroad. Whether stationed on bases, aboard aircraft carriers, or deployed in expeditionary environments, MAs ensure safety through force protection, physical security, and policing operations.

This role is designed for individuals ready to serve in a fast-paced, armed, and safety-critical environment. The work demands unwavering attention to detail, sound judgment, and professionalism. MAs may specialize in diverse areas such as military working dogs, harbor security, corrections, investigations, or protective services, offering a career path that evolves from general security duties to specialized leadership billets like watch commander or investigator.

What to Expect

Life as a Master-at-Arms involves frequent duty in rotating shifts, including nights, weekends, and holidays, to maintain 24/7 security coverage. You will face stressful situations involving emergencies, accidents, or criminal activity, requiring calm decision-making and strong communication skills. The role includes ongoing qualification and requalification in weapons, use of force, tactical skills, and physical fitness.

Assignments vary widely, ranging from Navy installations in the U.S. and overseas to aircraft carriers and strategic weapons facilities. You will work primarily on bases, piers, flight lines, and in patrol vehicles, often integrating closely with Marine units, NCIS, and joint or host-nation partners. The position offers opportunities for overseas, forward-deployed, and dependent-restricted tours that count as sea duty for rotation.

Training and Advancement

The journey begins with Recruit Training followed by Master-at-Arms Class "A" School at Lackland AFB, where you will learn the fundamentals of law enforcement, weapons handling, antiterrorism, and security operations. Career development is progressive, driven by on-the-job qualification through Personnel Qualification Standards and unit training.

As you advance, opportunities arise for advanced schools awarding specific Navy Enlisted Classifications, such as Military Working Dog Handler, Harbor Security Coxswain, Corrections Specialist, and Criminal Investigator. The Navy supports career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, or NWS), and senior enlisted leader programs.

Equal Opportunity

The United States Navy is an equal opportunity employer. We consider qualified applicants regardless of background, race, color, religion, sex, national origin, age, disability, or veteran status. All applicants must meet strict character and conduct standards, including background screening and eligibility for security clearance, to serve in this armed law enforcement capacity.