Airmen of the 28th Security Forces Squadron render salutes as the flag is lowered during the Police Week retreat ceremony on Ellsworth Air Force Base, S.D., May 15, 2013. National Police Week has been a time to honor local, state and federal law enforcement members currently serving and those who have fallen officers for 47 years. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)