3/10/2011 - Tech. Sgt. Kevin Hazen and Staff Sgt. Joe Horton, 374th Comptroller Squadron post-attack reconnaissance team members, perform buddy checks before re-entering a building following a PAR sweep during an Operational Readiness Exercise here March 10. During the sweep the team is responsible for locating unexploded ordnances, personnel casualties, chemical contaminants and other hazards to report to their unit control centers. (U.S. Air Force photo/Staff Sgt. Samuel Morse)

3/10/2011 - Post-attack reconnaissance team personnel perform a buddy check on one another to ensure that there is no contamination on them following a simulated chemical attack during an Operational Readiness Exercise here March 10. PAR teams are sent out following a suspected chemical attack to confirm whether agents are present. (U.S. Air Force photo/Airman 1st Class Krystal M. Garrett)