Do you believe that we've been visited by aliens? And I don't mean people from other countries on this planet but an extraterrestrial.  

Pentagon officials speaking at the first public hearing on UFOs since the 1960s have shown previously classified footage of an unidentified aerial phenomenon (UAP), a split-second video of a metallic sphere zooming across the flight path of a military jet at hypersonic speeds. What exactly it could be remains a mystery. 

U.S. Navy pilots have reported 144 sightings of UAPs since 2004. The new Airborne Object Identification and Management Synchronization Group (AOIMSG) that was set up to track UAPs said that the Pentagon could not rule out the possibility that the sightings could be connected to extraterrestrial life.

If the extraterrestrials are looking for signs of intelligent life on earth...they may have to look elsewhere :)