Security & Law Enforcement (Master-at-Arms)

About the Role

Master-at-Arms (MA) Sailors serve as the Navy's core security, antiterrorism, and law enforcement capability. They are tasked with protecting people, installations, ships, and strategic assets both at home and abroad. The role encompasses force protection, physical security, and policing across diverse environments, including bases, ships at sea, and expeditionary settings. MAs may further specialize in critical areas such as military working dogs, harbor security, corrections, investigations, or protective services.

What to Expect

You will work in a fast-paced, armed, and safety-critical environment where attention to detail, sound judgment, and professionalism are paramount. The role demands frequent duty in rotating shifts, including nights, weekends, and holidays, to ensure 24/7 security coverage. You will face stressful situations involving emergencies, accidents, or criminal activity, requiring calm decision-making and strong communication skills. The career path involves ongoing qualification and requalification in weapons, use of force, tactical skills, and physical fitness, with increasing responsibility as you qualify for specialized billets like patrol supervisor, watch commander, or investigator.

Work Environment

Assignments vary widely, ranging from Navy installations in the U.S. and overseas to aircraft carriers, other ships, and expeditionary security units. You will work primarily on bases, piers, flight lines, and in security operations centers, often utilizing patrol vehicles, harbor security boats, kennels, and armories. The role offers opportunities for overseas, forward-deployed, and dependent-restricted tours that count as sea duty. You will work in close integration with other security forces, Marine units, NCIS, and joint or host-nation partners depending on your specific billet.

Training & Advancement

Your 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. Advancement is driven by progressive on-the-job qualification through Personnel Qualification Standards and unit training. Opportunities exist for advanced schools awarding Navy Enlisted Classifications such as Military Working Dog Handler, Harbor Security Coxswain, Corrections Specialist, and Criminal Investigator. Career-long development is supported by leadership courses, warfare qualifications, 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 genetic information. We are committed to building a diverse and inclusive force that reflects the nation it serves.