SAN FRANCISCO -- A team of FBI agents carry an injured agent toward an MH-65 Dolphin helicopter during a training exercise March 25, 2010. The Coast Guard helicopter crews, from Air Station San Francisco, supported three training exercises in which the FBI simulated the pursuit of fleeing suspects from a terrorist attack. Using its airborn use of force and electronic surveillance system capabilities, the helicopter crews provided aerial reconnaissance and tactical cover for the FBI assault teams in rural and urban settings. U.S. Coast Guard photo by Air Station San Francisco.