US Secretary of Defense Gates holds a media briefing at the Pentagon in Washington

 
US Secretary of Defense Gates holds a media briefing at the Pentagon in Washington
REFILE - CAPTION ADDITION U.S. Secretary of Defense Robert Gates holds a media briefing at the Pentagon in Washington November 30, 2010. The Pentagon unveiled a study on Tuesday that played down the impact of ending the U.S. military's ban on gays, but worries among U.S. generals about the fallout on troops fighting abroad could delay action. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS MILITARY IMAGES OF THE DAY HEADSHOT)