about an upcoming declassified report on ufos. here s brian todd. reporter: outside their cockpit windows veteran navy fighter pilots apparently see objects that surprise them. there is a whole fleet of them. look on the asa. my quosh. they are going against the wind. the wind is 120 knots to the west. reporter: this video is from a u.s. military training mission off the coast of jacksonville, florida n 2015. objects are ufos, and military pilots have seen so many of them in recent years that the pentagon and u.s. intelligence community have undertaken a large scale investigation. cnn has learned u.s. intelligence officials found no evidence to confirm that those objects are alien spacecraft, but they also cannot rule out that possibility. that s according to five sources familiar with an upcoming report to congress. there is a lot they cannot say. a lot they don t know from a