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.


Up in smoke
Tech. Sgt. Matthew Young, noncommissioned officer in charge of facilities and cryogenics, performs a demonstration involving liquid-nitrogen for University of Puerto Rico Reserve Officers' Training Corps cadets on April 14, 2023, Luke Air Force Base, Ariz. The cadets toured several units across the installation to explore different career fields and experience life in the Air Force. (U.S. Air Force photo by Airman 1st Class Katelynn Jackson)

Download Image: Full Size (3.66 MB)
Photo by: Airman 1st Class Katelynn Jackson |  VIRIN: 230414-F-KJ279-9616.JPG