Sgt. 1st Class Brian Calloway (center), a crew chief with C Company, 1st Battalion, 131st Aviation Regiment, helps FBI agents load emergency-response equipment onto a North Carolina National Guard Black Hawk helicopter, Sept. 3, at the Mecklenburg Police Academy before practicing an emergency response training flight in Charlotte, N.C. The helicopters were available to haul the agents and nearly 5,000 pounds of equipment into areas that emergency vehicles were unable to reach during the Democratic National Convention. The team was a back-up contingency, only available as a last resort. (U.S. Army Photo by Sgt. Ruth McClary, 130th Maneuver Enhancement Brigade Public Affairs)