 He testified before the congressional Committee on Oversight and Government Reform in 2007 about receiving a memo from Lt. Gen. Stanley McChrystal, then-commander of JSOC, informing Brown that it was "highly possible that Corporal Tillman was killed by friendly fire".Ultimately, former commanding general of USASOC Lt. Gen. Philip Kensinger and other Army officers were held responsible for the mishandling of information surrounding Tillman's death.On November 23, 2005, Brown, together with U.S. Secretary of Defense Donald Rumsfeld, and Marine Corps Commandant General Michael Hagee announced the creation of the Marine Corps Forces Special Operations Command (MARSOC).