Thanks, deranged.
The thing that I would worry about is the following. From the TSA list:
"Prohibited items are . . . and include items that are seemingly harmless but may be used as weapons the so-called 'dual use' items. . .
"To ensure everyone s security, the screener may determine that an item not on the prohibited items chart is prohibited. In addition, the screener may also determine that an item on the permitted chart is dangerous and therefore may not be brought through the security checkpoint. . . "
Then on page 4, kubatons are prohibited. That would be one mechanism. Most EDC-sized lights can be used as kubatons. (But so can pens.)
But I really wouldn't worry about it. A Surefire E2D is one thing, but seizure of a regular flashlight would not be reasonable. They aren't on the prohibited list. You might accidentally have some overzealous freak, but I serously doubt you wouldn't get it back.
This supercedes all their policies, and implies pretty strongly that they have to warn you explicitly about what can be taken:
"Amendment IV
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized. "
Scott