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 offers a dynamic career path where you can specialize in diverse fields such as military working dogs, harbor security, corrections, investigations, or protective services. As you progress, you will take on increasing responsibility, potentially advancing to roles like patrol supervisor, watch commander, or investigator.

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 24/7 coverage, meaning you will frequently work rotating shifts that include nights, weekends, and holidays.

You will face stressful situations involving emergencies, accidents, or criminal activity, requiring calm decision-making and strong communication skills. The job involves continuous qualification and requalification in weapons handling, use of force, tactical skills, and physical fitness. Assignments may take you to Navy installations in the U.S. and overseas, aboard ships, or with expeditionary security units, often integrating closely with Marine units, NCIS, and joint partners.

Training & Career Development

Your journey begins with Recruit Training, followed by Master-at-Arms Class "A" School at Lackland AFB. Here, you will learn the fundamentals of law enforcement, weapons handling, antiterrorism, patrol procedures, and security operations. From there, you will report to an operational security force billet at an installation, ship, or expeditionary unit.

Career growth is supported by progressive on-the-job qualification through Personnel Qualification Standards and unit training. Advanced opportunities allow you to earn Navy Enlisted Classifications (NECs) as a Military Working Dog Handler, Harbor Security Coxswain, Corrections Specialist, or Criminal Investigator. Throughout your career, you can pursue leadership courses, warfare qualifications, and senior enlisted leader programs.

Application & Hiring Process

To join the Master-at-Arms community, you must meet general enlistment standards, including U.S. citizenship or eligible residency, a high school diploma, and specific age, medical, and character requirements. You must also achieve the necessary test scores and be eligible for a security clearance.

For prior-service Sailors, conversion into the MA rating is possible based on community needs and screening. Reserve opportunities may exist for qualified applicants, often requiring specific training or NECs. Because incentives, bonuses, and specific assignments depend on current Navy needs and policy, all applicants should confirm details with an official Navy recruiter.

Equal Opportunity & Culture

The Navy is an Equal Opportunity Employer. We consider qualified applicants regardless of background, race, color, religion, sex, national origin, disability, or veteran status. We value the diverse perspectives and experiences that our Sailors bring to the team, fostering a culture of integrity, honor, and commitment to the mission.