Coast Guard Chief Warrant Officer Rick Nieves, a vessel inspector for Sector Anchorage, Alaska, prevention department, observes work being done to the ferry Tustumena in Seward, Alaska, July 31, 2013. Coast Guard prevention departments are responsible for all Coast Guard operations directed at preventing maritime casualties, marine oil spills, accidents, and security related incidents at and on regulated waterfront facilities and vessels, including critical infrastructures. (U.S. Coast Guard photo by Petty Officer 1st Class Shawn Eggert)