Senior Airman Joshua Watkins (left), Senior Airman Guy Lewers, Airman 1st Class Joseph McGuire and Airman Alexander Grochala, all with the 436th Security Forces Squadron, practice tactics for clearing a room July 14, 2011, at Wesley College in Dover, Del. The exercise was a joint exercise between 436th SFS and the Dover Police Department. (U.S. Air Force Photo/Roland Balik)