190517-N-ZI635-154 ROTA, Spain (May 17, 2019) Cmdr. Luke Greene, outgoing commanding officer of Naval Mobile Construction Battalion (NMCB) 133, addresses guests during change of command ceremony on board Naval Station Rota, Spain. Cmdr. Frank Carroll relieved Greene as commanding officer of NMCB-133. NMCB-133 is forward deployed to execute construction, humanitarian and foreign assistance, and theater security cooperation in the U.S. 6th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class George M. Bell/Released)