Senior Airman Justin Moyle, a conventional maintenance crew chief assigned to the 28th Munitions Squadron, observes Seaman Mathew King, a mineman assigned to the Navy Munitions Command Atlantic Unit, Charleston, S.C., as he builds an inert MK 62 mine at Ellsworth Air Force Base, S.D., July 20, 2016. Sailors conducted joint training with Ellsworth Airmen in July, instructing them on building mines that can be employed by the B-1 bomber. (U.S. Air Force photo by Airman 1st Class Sadie Colbert)