By most accounts, the U.S. airspace is safer than ever; fatal crashes involving passenger jets are exceedingly rare, and the Pentagon reports that the accident rate for drones is on the decline. But as the military and the federal government gear up for a planned expansion of drones in domestic airspace, crashes are mounting. Hundreds of U.S. military drones have crashed in major accidents around the world since 2001, 49 of them have fallen out of American skies. And that’s according to a year-long investigation by the Washington Post. The investigation’s lead author, Craig Whitlock, joins us. He covers the Pentagon and National Security for the Post.