Capt. Jerrel Scriven, Joint Task Force-Bravo director of protocol, swings a sledge hammer into a tire for strength training June 03, 2015, at Soto Cano Air Base, Honduras. This is one of many exercises in the grueling workout known as “Sgt. Maj. PT,” a training session led JTF-B’s Command Sgt. Maj., Nelson Callahan, that encourages members to “lead by example, to break a sweat, to blast [their] core and to build unit cohesion” (U.S. Air Force photo by Capt. Christopher Love).