Dashcam footage from several vehicles in Kentucky caught a curious sight on Sunday. A convoy rolling along the highway was flying an unusual flag. The blue banner streaming behind one of the trucks wasn’t your typical for a convoy.

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ABC news is reporting that military officials are investigating the incident. Flying a Donald Trump flag may be construed as misconduct, as it is clearly not an authorized flag. It is so unusual, in fact, that many of the people who saw the flag assumed the vehicles in the convoy were surplus, and didn’t belong to the military.

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The photos and videos are going viral. The convoy’s lead vehicle had the bright blue banner flying from an antenna.

It is unclear why they were in Kentucky. The vehicles had no identifiable markings, and when local media outlets contacted the bases in the area, they were told that the convoy didn’t belong to any of them.

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Authorized or not, the flag is getting even more attention now that the Navy has said who the flag belonged to.

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“The convoy were service members assigned to an East Coast-based Naval Special Warfare unit driving vehicles while transiting between two training locations,” Lieutenant Jacqui Maxwell, spokesperson for Naval Special Warfare Group 2, said in an interview with ABC News.

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SEAL teams train at Fort Knox, so they may have been headed to or from there.

“Defense Department and Navy regulations prescribe flags and pennants that may be displayed as well as the manner of display,” said Maxwell. “The flag shown in the video was unauthorized.”

There is an outside possibility that the flag may belong to support staff, as Maxwell noted in his conversation with ABC. The teams travel with large logistical support units. Still, the unauthorized flag was flying proudly, even if it was unauthorized.

If the flying of Trump’s flag is determined to be misconduct, Maxwell noted that the unit’s commander will “make a disposition decision as to the appropriate administrative or disciplinary action.”