Coast Guard Petty Officer 2nd Class John Webster, a boatswain's mate and buoy deck supervisor (right), keeps a watchful eye on the buoy's mooring chain while buoy deck crewmembers aboard the Coast Guard Cutter Osage, prepare to replace the buoy's hull in the Ohio River Tuesday, Feb. 10, 2009. The Osage, 65-foot inland river tender, homeported in Sewickley, Penn., maintain approximately 800 aids to navigation along the Allegheny, Monongahela, Ohio, Kanawha and Big Sandy rivers. The crew's area of responsibility covers more than 600 miles of river and is a crucial part that keeps commerce flowing up and down America's river system. (U.S. Coast Guard photo/Petty Officer 2nd Class Thomas M. Blue)