The Provost Marshal Office is a professionally trained, positive, community customer focused Army law enforcement and access control organization that is responsive to the needs of not only the commander but the civilian community. The Provost Marshal Office is the chief law enforcement office on the installation and provides the community with 24 hour police support to maintain good order and discipline, safety and security for all those who live and or work on Fort Huachuca.

The ALC Physical Security Office assists members of the Adelphi Laboratory Center community by providing guidance on law enforcement, emergency response, and security issues. ALC Physical Security Office provides 24/7 force protection, and community assistance by maintaining liaison with federal, state, and local law enforcement agencies. the ALC Physical Security Office defends good order and discipline by enforcing the rule of law and policies of the APG Garrison Commander and the USAG ALC Garrison Manager. .
Responsible for enforcing environmental laws; hunting regulations; manages the installations enforcement effort in the deterrence of undocumented immigrants traversing the installation; and game and fish enforcement. Establishes safety and security checkpoints to ensure the safety of all Soldiers, Family Members and Civilians on the installation.