Alien spacecrafts or earthlings? What Pentagon's UFO report says on sightings

144 UFOs have been sighted in US skies over a short period of time. The US Director of National Intelligence released a report on what it calls Unidentified Aerial Phenomena, commonly called UFOs. The 9-page report failed to zero in on a specific explanation but didn’t rule out the possibility of extra-terrestrial activities. Last year, videos recorded by the navy were released prompting many theories and speculations.