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. From conducting force protection patrols on piers to managing corrections and investigations, MAs operate in diverse environments ranging from bases and ships to expeditionary units. The role offers a dynamic career path where Sailors can specialize in areas such as military working dogs, harbor security, or protective services.

What to Expect

This is a fast-paced, armed, and safety-critical career where attention to detail, sound judgment, and professionalism are paramount. MAs work in rotating shifts, including nights, weekends, and holidays, to ensure 24/7 coverage. The environment often involves high-stress situations requiring calm decision-making and strong communication skills. As you progress, you will take on increasing responsibility, qualifying for specialized billets like patrol supervisor, watch commander, or investigator.

Work Environment

Assignments vary widely, taking you to Navy installations in the U.S. and overseas, aboard aircraft carriers and other ships, and with expeditionary security units. You will work primarily on bases, piers, flight lines, and in security operations centers, often integrating closely with Marine units, NCIS, and joint partners. The role offers opportunities for overseas, forward-deployed, and dependent-restricted tours that count as sea duty for rotation.

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, and antiterrorism. Career development is progressive, driven by on-the-job qualification through Personnel Qualification Standards and unit training. You will have access to advanced schools to earn Navy Enlisted Classifications such as Military Working Dog Handler, Harbor Security Coxswain, and Criminal Investigator. The Navy supports career-long growth through leadership courses and warfare qualifications.

How to Apply

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 medical and physical fitness requirements. Most billets require eligibility for a security clearance and a clean legal history suitable for armed law enforcement duties. If you are interested in this career, please contact an official Navy recruiter to discuss current incentives, eligibility, and the application process.

Equal Opportunity

The U.S. Navy is an equal opportunity employer. We consider qualified applicants regardless of background, race, color, religion, sex, national origin, age, disability, or veteran status.