Preliminary evidence has shown that the SpaceX rocket which was to deliver Facebook's first satellite into orbit that exploded while on the launch pad at Cape Canaveral, Florida was hit by a projectile- possibly from a drone. Images captured seconds before the incidence showed an object hitting the rocket from the right side of the screen at about 3 seconds in. Very hard to catch [the image] because it happens in one frame. The object is circled along with its line of movement.
Sources: http://www.cnn.com/videos/cnnmoney/2016/09/01/spacex-rocket-explodes-on-launch-pad.www-uslaunchreport-com
and
http://beforeitsnews.com/space/2016/09/was-spacex-hit-by-projectile-check-this-out-2501713.html