A diver from Maritime Safety and Security Team San Diego’s Regional Dive Locker West, prepares to enter the water during a mass rescue exercise in Mission Bay, March 6, 2014. U.S. Coast Guard, San Diego Lifeguards and other emergency response agencies worked together to practice responding to a maritime collision scenario resulting in multiple injured people in the water. (U.S. Coast Guard photo by Petty Officer 3rd Class Connie Terrell)