Master Sgt. Chris Sentilles, 815th Airlift Squadron loadmaster, secures a container delivery system on one of the squadron’s C-130J aircraft that took part in a four-aircraft training mission Sept. 11, 2016, over the Mississippi Gulfcoast. The aircraft took off from Keesler Air Force Base, Mississippi, and airdropped simulated cargo and heavy equipment over Stennis International Airport, Mississippi. (U.S. Air Force photo/Tech. Sgt. Ryan Labadens)