Two Navy airman flying over the Pacific Ocean on a routine training mission claim they encountered mysterious objects that 'accelerated like nothing' they had 'ever seen' before. 

Back in 2004, Navy Cmdr. David Fravor and Navy Lt. Cmdr. Jim Slaight were flying about 100 miles off the coast of San Diego in each of their F/A-18F Super Hornets carrying two CATM-9s, which are dummy missiles that could not be fired, the New York Times reported.

According to Fravor, the operations officer aboard Navy cruiser U.S.S. Princeton had been communicating with the pair during their mission and said, 'Well, we've got a real-world vector for you.'

The operator said for the past two weeks the Navy cruiser had been tracking mysterious aircraft. 

The objects would first appear at 80,000 feet, and then speed toward the sea before stopping at 20,000 feet and hovering.

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