160510-N-ZA795-048 WASHINGTON (May 10, 2016)Reserves Sailor of the Year Equipment Operator 1st Class Steven Butterhof assigned to Naval Mobile Construction Batallion (NMCB) 27, throws the ceremonial first pitch as part of the Washington Nationals Navy Day pregame ceremonies. The Washington Nationals paid tribute to Sailors for their service to the nation during their annual Navy Day. (U.S. Navy photo by Mass Communication Specialist 1st Class Pedro A. Rodriguez/Released)