An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.



Sort By:
Members of the 50th Security Forces Squadron team line up in a diamond formation behind a crisis response shield during an active-shooter exercise on Schriever Air Force Base.


Members of the 50th Security Forces Squadron form a tactical “diamond formation” in response to a simulated active-shooter exercise during Opinicus Vista 19-3 at Schriever Air Force Base, Colorado, Nov. 20, 2019. Exercises give base personnel an opportunity to practice crisis response and remain prepared for real-world events. (U.S. Air Force photo by Kathryn Calvert)

Related Imagery