PITTSBURGH - A U. S. Coast Guard Marine Safety Unit Pittsburgh 25-foot response boat and crew prepare to moor alongside the U. S. Coast Guard Cutter Osage, Thursday, Sept. 24, 2009.Personnel from Marine Safety Units Pittsburgh, Huntington and Cincinnati patrolled the Ohio, Allegheny and Monongahela rivers during the Pittsburgh Summit. The Summit was held at the David L. Lawrence Convention Center. (U.S. Coast Guard photo/ Petty Officer 3rd Class Casey J. Ranel)