Originally Posted by Packrat

You obviously need to spend some quality time with F/As discussing what they are responsible for in back. One of the things they do while boarding is mentally choosing people who they think would be Able Bodied Passengers (ABPs) in case they need assistance.

By IDing yourself to them they know they have at least one TRAINED ABP they can rely on. Do I really need to hook up with an F/A I'll never see again? Nope. I'll leave that for you Tinder browsing millennials out there.