PITTSBURGH, Pa. -- The Coast Guard and Pittsburgh law enforcement agencies cooperated in planning and providing a security zone for the G-20 Summit on the Allegheny, Ohio and Monongahela rivers, from Sept. 24 to Sept. 25., 2009. Coast Guard personnel and assets, nation-wide, converged on Pittsburgh to assist local commands in their preparations and implementation. U.S. Coast Guard video by Petty Officer 3rd Class Stephen Lehmann.Visit us at www.gocoastguard.com