I am not happy about not being able to choose my seat anymore. I book my flights at least 3-4 months in advance and I feel I should be able to choose my seat. Going through the security check was ok until I got to the lady with the wand. I have a plastic brace on my leg. It has 2 places where the base of the closure is a small metal ring. I TSA know and all of the gentleman were accommodating except for the woman. She told me to lift my leg. I couldn't really do it and she seemed really unsympathetic. It was not a great experience. I was really pleased with the flight itself. The pilot had a smooth take off and landing. Attendants were very nice.