There's a mysterious flying object in the skies above Colorado that almost caused a mid-air crash.
Earlier this week, a corporate jet pilot reported seeing a "large remote-controlled aircraft" near his plane while flying over Denver. Investigators say the object did not show up on radar, but radio transmissions between the cockpit and air traffic control captured the moment. The FAA is now investigating.
The question is: Was it an unmanned drone or a remote controlled aircraft?
Aviation safety expert and former FAA official Steven Wallace explains.