170221-N-YB832-050 SAN DIEGO (Feb. 21, 2017) Builder 2nd Class Aaron Brown, left, and Construction Mechanic 1st Class Matthew Ramirez explain the features of a diving helmet to Rear Adm. Brian Brakke, Commander of Navy Expeditionary Combat Command (NECC) at WEST 2017. Now in its 27th year, WEST 2017 brings military and industry leaders together to engage with the makers of military platforms and the designers of today’s latest technologies. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ellen Hilkowski/Released)