Razor's edge Published March 19, 2003 ROYAL AIR FORCE FAIRFORD, England (AFPN) -- Staff Sgts. Ralph Oliver (left) and Bruce Cook set up concertina wire along the perimeter here for increased force protection. They are assigned to the 424th Air Base Squadron Civil Engineer Flight. RAF Fairford is home of the 457th Expeditionary Operations Group. Troops deployed here support the war on terrorism and potential contingency operations. (Photo by Airman 1st Class Stacia M. Willis)