150420-N-ZZ999-751 WASHINGTON (April 20, 2015) Naval Sea Systems Command employees and guests look on during the dedication ceremony for the Naval Sea Systems Command headquarters, the Humphreys Building, Building 197, at the Washington Navy Yard. The renovated building is named in honor of 19th century American frigate designer Joshua Humphreys, the architect of the original six U.S. Navy frigates, including USS Constitution. (U.S. Navy Photo by Scott Adam Webb/Released)