Where did they get flex cuffs? Airlines keeping them on hand now?
After 9-11 everytime I flew I carried several of the heavy duty AC duct flex ties in my laptop bag, just in case.
TSA never said a word. I flew over a million miles for work after 9-11, a lot of it international, and those flex ties were standard issue for me.
I carry zip ties everywhere I go. They are good for lots of uses.