Senior Airmen Joshua Cavalancia, 31st Munitions Squadron precision guided munitions crew member, and Daniel Guilfoyle, 31st MUNS munition systems equipment maintenance crew member, perform push-ups during the Memorial Day “Murph” challenge, May 30, 2016, at Aviano Air Base, Italy. The participants completed the challenge to pay tribute to fallen service members. (U.S. Air Force photo by Airman 1st Class Cary Smith/Released)