Imagine the shock on the TSA agents' faces when Tammy Banovac showed up for her flight on Tuesday in Oklahoma wearing only her bra and panties and sitting in a wheelchair. Now imagine the look on their faces when Banovac failed her screening because nitrates, used in bomb-making, were found on her wheelchair.

That's exactly what happened in Oklahoma City yesterday.

Undeterred, Banovac rolled up once again to a TSA screening checkpoint this morning wearing her black undergarments -- this time, however, no nitrates kept her from catching a 7 a.m. flight with her dog to Phoenix:

Banovac told NewsOK she chose to wear her underwear because of an unpleasant experience two weeks ago at airport security. She is typically hand-searched at airports because she uses a wheelchair, she said, and she felt violated by the more invasive searches employed at airports recently.