Staff Sgt. Jean Archambeau teaches Lt Col. Lawrenece Calabro, members of the Air Force District of Washington CBRNE response force, how to use a range finder to determine their distance and position from the incident April 1. The center was created after 9/11 to train America's response force how to handle emergency situations through realistic and extensive training. (U.S. Air Force photo/ Senior Airman Renae Kleckner)