An official website of the United States Government 
Here's how you know

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( lock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Photos

Snapshots of what’s happening in the Defense Department.

Two Marines kneel next to a wooden door while two others stand watch with weapons in a concrete structure.

Explosive Entry

Marines place a doughnut charge during breaching training at Camp Hansen, Okinawa, Japan, Aug. 12, 2025. A doughnut charge is a loop of detonation cord used to destroy locked door handles. The training was designed to enhance mobility, survivability and lethality in built-up environments by practicing explosive and mechanical entry techniques.

Photo Gallery