In a bit of recycled bunk, some video of the September 2nd, 2015 Atlas V Rocket Launch in Florida has popped up on social media wth misleading headlines. The footage was upload to Liveleak with the headline "Unkown object over Azerbaijan - July 2016" [sic] and also posted on the Facebook page of Bestagram Azerbaijan, where it got 15 million views. It was then picked up by British tabloid media, including the Daily Mail, and The Sun.
The footage is in Miami airport, where several people took videos of the rocket launch, for example:
This video shows the full development of the plume:
Local News reported on the public's confusion:
And the day after the launch the Miami New Times reported "Everyone Freaked Out"