SAN FRANCISCO - Daniel Royal, a watchstander at Coast Guard Sector San Francisco Vessel Traffic Service, communicates with mariners operating on the San Francisco Bay and Sacramento River Delta System as part of his VTS watch, Friday, Sept. 17, 2010. The San Francisco VTS is responsible for monitoring ship movement 38 miles from the Golden Gate Bridge to the inland ports and waterways of Stockton and Sacramento. U.S. Coast Guard photo by Petty Officer Pamela J. Manns.