TSA can't arrest or detain, but they can call the police. I'm quite sure you'd be detained. I don't know on what grounds an arrest could be made, so you're pr

TSA can't arrest or detain, but they can call the police. I'm quite sure you'd be detained. I don't know on what grounds an arrest could be made, so you're probably right that you'd be removed from the premises after some holding period.