WRIGHT-PATTERSON AIR FORCE BASE, Ohio – Master Sgt. Scott Todd, 445th Aircraft Maintenance Squadron aircraft electrical and environmental systems craftsman, practices using a tourniquet on Senior Airman Alexander McCaskill, 445th AMXS aircraft maintenance journeyman, during the self aid and buddy care portion of the 445th Maintenance Group’s annual mega training Dec. 15. (U.S. Air Force photo/Staff Sgt. Amanda Duncan)