100th SFS Defenders accept challenge
RAF MILDENHALL, England – Airman 1st Class Barry Obrien, 100th Security Forces Squadron, performs a pull-up as Tech. Sgt. Michael Crawford, 100th SFS, does a push-up during the Defender Challenge May 16, 2012, here. The challenge was held in conjunction with the National Police week celebration. (U.S. Air Force photo/Senior Airman Rachel Waller)