An Airman assigned to the 109th Airlift Wing, Stratton Air National Guard Base, New York, performs pre-flight inspections on the flightline at Joint Base Pearl Harbor-Hickam, Hawaii, Oct. 31, 2019. All the LC-130 aircraft need to be in theater in a timely fashion to support the National Science Foundation’s mission. Pacific Air Forces operates on a 24-hour basis to provide complete joint operational and logistic support for the National Science Foundation-managed U.S. Antarctic Program (USAP). Operation DEEP FREEZE is the U.S. military’s contribution to the civilian-managed USAP. (U.S. Air Force photo by Staff Sgt. Mikaley Kline)