The 2015 footage was recorded (off the U.S. East Coast) by a U.S. Navy F/A-18 Super Hornet using the Raytheon ATFLIR forward-looking infrared system.
The fast-flying, white, oval shaped object has no obvious wings, tails or exhaust plume, according to the To The Stars Academy of Arts & Science.
Wikipedia article: “Boeing F/A-18E/F Super Hornet”:
Wikipedia article: “AN/ASQ-228 ATFLIR”:
Wikipedia article: “Raytheon”:
(Fox News/youtube.com image)
F/A-18F Super Hornet (wikimedia.org)