ANTIOCH, Calif. - Coast Guard auxiliarist Kevin Malloy tosses a line to fellow auxiliarists during a towing exercise on the San Joaquin River Saturday, August 29, 2009. Auxiliarists must demonstrate boat-handling and crewing skills and must pass a written and hands-on exam in order to qualify as boat crewmembers. (U.S. Coast Guard photo by Petty Officer 1st Class Sherri Eng)