435th AGOW, NATO allies conduct HALO jump
Sgt. Carlos Basilio, Portuguese paratrooper, adjusts his oxygen mask in preparation for a free-fall jump during exercise Real Thaw 16 in Beja, Portugal, Feb. 24, 2016. The paratroopers jumped from approximately 18,000 feet to test their high-altitude free-fall capabilities. (U.S. Air Force photo/Senior Airman Jonathan Stefanko)