Builder 3rd Class Aaron Rives, assigned to Naval Mobile Construction Battalion 3, Det. Sigonella, digs concrete steps for the Department of Defense Dependants School in Sigonella. NMCB 3 is an expeditionary naval construction element currently assigned to U.S. 6th Fleet's Commander, Task Force 68, to provide construction, engineering, and security services that support national strategy, naval power projection, humanitarian assistance and contingency operations.