Gates, Mullen Testify At Senate Hearing On "Don't Ask Don't Tell"

WASHINGTON, DC - DECEMBER 02: Demonstrators from Code Pink for Peace hold up signs during a hearing of the Senate Armed Services Committee about the military's "don't ask, don't tell" policy on Capitol Hill December 2, 2010 in Washington, DC. Defense Secretary Robert Gates announced earlier this week that a comprehensive study found that allowing gay men and women to serve openly in the United States armed forces presents a low risk to the military's effectiveness, even at a time of war, and that 70 percent of service members believe that the impact of repealing the law would be either positive, mixed or of no consequence at all. (Photo by Chip Somodevilla/Getty Images)