Embattled NBC Nightly News anchor Brian Williams canceled his scheduled appearance on the Late Show with David Letterman, according to CNN’s Brian Stelter. Williams was set to appear on the show this coming Thursday, February 12th. 
 
 On Saturday, Williams announced he would be taking a brief hiatus from the anchor chair in light of the controversy surrounding a false story he told over the years about his helicopter being shot down by an RPG in Iraq in 2003 while he was covering the war. 
 
 David Letterman‘s show was one of the many platforms Williams used to tell the Iraq helicopter story. 
 
 Williams has no other scheduled television appearances. 
 
 [Image via screengrab] 
 
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 Caption 
 
 How Brian Williams's Iraq story changed over time 
 
 A compilation of Brian Williams's television appearances shows how his accounts of a 2003 episode on military helicopters in Iraq gradually became more perilous. 
 
 A compilation of Brian Williams's television appearances shows how his accounts of a 2003 episode on military helicopters in Iraq gradually became more perilous.
– Looks like David Letterman will have to save that "Top 10 Things That Really Happened to Brian Williams' Helicopter" list for another time: The NBC anchor has canceled his scheduled Thursday appearance on the Late Show, reports the Los Angeles Times. An NBC exec says the anchor, who's on hiatus amid questions over Iraq and Hurricane Katrina stories, decided to pull out of the Letterman appearance because it's not clear when he will return to NBC Nightly News. In 2013, Williams appeared on Letterman's show and shared his false story about being in a helicopter that was hit by RPG fire in Iraq, Mediaite reports.