Brian Williams

FILE – In this Nov. 5, 2014 file photo, Brian Williams speaks at the 8th Annual Stand Up For Heroes, presented by New York Comedy Festival and The Bob Woodruff Foundation in New York. Williams has admitted he spread a false story about being on a helicopter that came under enemy fire while he was reporting in Iraq in 2003. Williams said he was in a helicopter following other aircraft, one of which was hit by ground fire. His helicopter was not hit. NBC News was not commenting Thursday about whether its top on-air personality would face disciplinary action. (Photo by Brad Barket/Invision/AP, File)