161011-N-HV059-039 BALTIMORE, Md. (Oct. 11, 2016) Petty Officer 1st Class Janelle Houghton and Petty Officer 2nd Class Kate Johnson lead a Science, Technology and Math (STEM) tour group aboard future USS Zumwalt (DDG 1000). Following an October commissioning ceremony in Baltimore, Zumwalt will transit to her homeport in San Diego for a Post Delivery Availability and Mission Systems Activation. DDG 1000 is the lead ship of the Zumwalt-class destroyers; next-generation multi-mission surface combatants. (U.S. Navy photo by Petty Officer 2nd Class Sonja Wickard/Released)