ABout the clearences and who gets to be near them, they would have to be done in advance. I am highly doubtful the TSA brigade would be the ones in charge of a National Security issue like background checks. I tend to think the clearances would have to be trusted to people possessing many more qualifications in order to insure the clearances weren't faked. I'd like to think FBI because I happen to hold them in high esteem.
I also agree with DisneyBamaFan because of things I know personally due to my DH's career. There is more out there than most people realize so for me it's all "Whatevs"... I don't care much about what they do just DON'T TOUCH unless you have a reason and don't expose me to any elective radiation, zero - nada - none.
I think you are confusing me with someone else, I've been fairly consistent about what I have a problem with and why... no hypocrisy

. It is all about my comfort zone... what are you saying? Do you WANT people to be coerced into being touched? I don't get you

If you are worried about safety what do you care what form people choose?
For the record, I feel that a comfortable compromise would involve people being able to choose one or the other, I wouldn't want you distressed any more than I want me distressed.