Mellon, who is also an advisor to the private research firm called To the Stars Academy of Arts and Science, wrote that the sightings of highly advanced aircrafts much superior to the ones in the USA have hinted at a possibility of some countries going much ahead of others in technology or an evidence of an alien civilization.
The video, which was obtained by the Stars Academy from proper "reporting channels", and was titled "Go Fast", shows an unidentified object moving at warp speed above the ocean surface. "Look at that flying!". He wrote that the Defense Department declassified two videos of U.S. military's encounters with mystery aircraft in December past year.
"I have never seen anything in my life, in my history of flying that has the performance, the acceleration - keep in mind this thing had no wings", he said.
To the Stars Academy of Arts and Science reports the unidentified object appears as a white oval moving quickly from the top right to the lower left of the screen. The fighter jets however found nothing.
Chris Mellon, an adviser to TTSA and a former deputy assistant secretary of defense for intelligence for the Clinton and George W. Bush administrations, wrote a piece in The Washington Post on Friday calling for more attention to the UFO issue.
"Defense Department officials who analyze the relevant intelligence confirm more than a dozen such incidents off the East Coast alone since 2015", he wrote.
The program was reportedly shut down in 2012 after five years, but some say it has continued as service members have looked into extraterrestrial events while carrying out their normal responsibilities.
The event has resurrected calls for UFO sightings to be taken seriously by the US government.
"There is no Pentagon process for synthesizing all the observations the military is making".
Mellon wrote, "We have no idea what's behind these weird incidents because we're not investigating".
One of the problems hampering development was the stigma associated with conducting research in this field, Mellon observed.
"It is time to set aside taboos regarding "UFOs" and instead listen to our pilots and radar operators".
Previous year in a report by the New York Times, Pentagon acknowledged they shelved a program in 2012 that was devoted to identifying unknown space objects claiming there "were other, higher priority issues" that deserved funding.
The DoD has not identified any of the mystery aircraft, leading some to believe that they could be extraterrestrial technology manned by alien visitors. "This is true up and down the chain of command, and it is a serious and recurring impediment to progress", he said.