OKLAHOMA CITY -- Airport security got a surprise on Tuesday when a woman in a wheelchair approached a checkpoint wearing only a black lace bra and panties.
Police were called to question the woman, Tammy Banovac, who was then allowed her to proceed to security.
She was given an "enhanced" pat down because she was in a wheelchair.
However, during the screening procedure for her carry-on items an alarm for nitrates was triggered, according to the TSA.
Authorities said nitrates could legitimately be present in medication, or if someone was hunting recently and there were traces of nitrates from the bullets.
But the TSA refused to allow her to board her Southwest Airlines flight to Phoenix.
Officials said they had no idea why Banovac acted the way she did, or if she was attempting to protest airport security.
Banovac returned to the airport Wednesday morning, again clad in her underwear, and cleared security without incident.
"Once she went through the checkpoint, she put slacks and a top on," Carney said.
Disabled Woman Goes Through Airport Security in Her Underwear
Tammy Branovac Goes Through Airport Security in Underwear (YouTube Video)