Capt. Kenny Williams, from the Rio Vista Fire Department, signals in a Coast Guard Air Station San Francisco Dolphin helicopter crew at a multi-agency law enforcement exercise held at Brannan Island State Park in Rio Vista, Calif., Tuesday, May 6, 2014. The helicopter was lined up next to joint agency’s helicopters to make a diverse static display. (U.S. Coast Guard photo by Petty Officer 3rd Class Adam Stanton)