Boomer and his handler, members of the Sonoma County Sheriff's Office, hone their explosive-ordnance detection skills at Berkeley Marina in Berkeley, Calif., Tuesday, May 2, 2017. Federal, state and local explosive-detection K-9 teams participated in a joint maritime training event, Bomb dogs by the Bay, that included luggage and vehicle sweeps, passenger screening, and boat familiarization. Coast Guard photo by Petty Officer 2nd Class Loumania Stewart