Airman Wanisha Spence, 374th Security Forces Squadron response force member, performs team pushups during Yokota’s 2019 National Police Week Defenders Challenge at Yokota Air Base, Japan, May 21, 2019. The Defenders Challenge was held as part of National Police Week in remembrance of all the security forces and law enforcement members who have fallen in the line of duty. (U.S. Air Force photo by Machiko Arita)