I have been thru TSA screening three times since getting my BCIR and have never been frisked or asked anything after going through the scanner. There is no logical reason a K pouch or BCIR should raise any concern since it is made entirely of small intestine and has no metal components. If this happens again to you, I would ask the agent to give you an explanation and then post it on this forum. By the way, I was frisked several times by TSA before I got my BCIR.