Moving them to the front of the line, no problem. You will never hear a complaint from me about someone needing special assistance, getting moved forward in line. Depending upon the line at Security, I've witnessed this on a few occassions.
However, everyone must go through security.
If this girl was wearing a Bhurka, would you have Security just "wave her through"? You have to have one set of rules that apply equally, to everyone.
Again, checking a wheelchair, walker and crutches is something the TSA does hundreds of times, every single day. You don't have to stand in line at Security very long to witness this yourself.
In the previous 22 years before 9/11, how many hijackings of planes were there?
Baaaaa!
“You have to have one set of rules that apply equally, to everyone.”
No, actually, you don’t.