170218-N-TC437-162 CAMP SHELBY, Miss. (Feb. 20, 2017) Builder Constructionman Dylan Simmons, left, and Construction Electrician 3rd Class Michael Edmondson, both assigned to Naval Mobile Construction Battalion (NMCB) 133, guard a Mine Resistant Ambush Protected vehicle during a field training exercise at Camp Shelby, Mississippi. Seabees around the world will take part in a year-long celebration in 2017 to commemorate the group's 75-year anniversary in March. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ignacio D. Perez/Released)