Defense Secretary Robert M. Gates gives opening remarks during a welcoming ceremony for three newly appointed senior department officials at the Pentagon, Aug. 10, 2009. The officials are: Zachary J. Lemnios, director, Defense Research and Engineering; Wallace C. Gregson, assistant defense secretary for Asian and Pacific Security Affairs; and Paul N. Stockton, assistant defense secretary for Homeland Defense and Americas' Security Affairs. Defense Secretary Robert M. Gates gives opening remarks during a welcoming ceremony for three newly appointed senior department officials at the Pentagon, Aug. 10, 2009. The officials are: Zachary J. Lemnios, director, Defense Research and Engineering; Wallace C. Gregson, assistant defense secretary for Asian and Pacific Security Affairs; and Paul N. Stockton, assistant defense secretary for Homeland Defense and Americas' Security Affairs. SHARE: Download: Full Size (5.43 MB) Tags: Photo Essays Credit: VIRIN: 655051-Q-SHD16-599.jpg Photo Gallery