The Pentagon has received hundreds of reports of new UFO sightings, including “several particularly interesting cases,” according to the director of the office that investigates these reports, but reiterated it found no evidence of alien activity.

Most reports described orbs, lights or cylinders, but about 4% were more unusual: "green fireball," "a jelly fish with [multicolored] flashing lights," a "silver rocket approximately six feet long."

The Pentagon’s UFO office has received more than 700 reports, a newly declassified assessment reveals. It’s a dramatic increase in witness sightings and accounts that adds to a growing list and comes as former Defense Department officials claim the U.