Could you please tell me why there are chairs after security for putting one's shoes back on, but no chairs prior to security for taking one shoes off? Also, why was my 83 year old dad required to take his shoes off when going through security at YYZ for entry into the US? Again, there was no chair for him to use, and the TSA agent demanded that he take his shoes off. We ended up sitting him up on the rollers that feed the bags into the X-ray machine and getting his shoes off that way. He was about to try and balance on one leg and take his shoes off - he would have fallen for sure.