I'm a little late to the party here, but one thought that occurred to me is that we need to make sure our Red Hats aren't trying to be TOO helpful.
Remember, these are proud Americans we're talking about. True, they maybe can't walk or whatever, but THEY KNOW THEIR LIMITATIONS.
Two stories to illustrate this: Many years ago, when I was in college, I was friends with a guy in a wheelchair. I foolishly bet him $10 that he couldn't wheelie from the student center to the dorms - about 1/4 of a mile. That was a $10 lesson I've never forgotten. He could, easily.
Fast forward 20 years or so and I'm working with a man who has a birth defect so that he's basically got only a thumb on his left hand and a thumb and forefinger on his right. A few times I'd offered to help him with something and he always refused. I stopped offering because I noticed that he could always DO the stuff. Maybe not as fast or as dexterously as I could, but he could. I was actually proud when, one day years later, he did ask my assistance with something. Showed he trusted me and that he appreciated that I'd stopped offering all the time. (as near as I can tell, about the only things he CAN'T do are play Cat's Cradle and give someone the finger!)
Anyway, the point of this is to remind us all is that handicapped is different than crippled. If the shooter is in a wheelchair, ASK him if he can ground the rifle before offering someone to help him do so. Explain what is needed and let HIM decide if he'll need assistance. If the shooter is missing a hand or an arm, talk to him and work out, together, what is needed.
Hope I'm not rehashing something that maybe got mentioned somewhere else, but I thought it was important enough to post about it.
Thank you for the post. Everyone is going to be on the learnng curve here as you point out about simply being able to ground the rifle. Hopefully the Down 'n' Dirty Admssions Manual at http://appleseedinfo.org/smf/index.php?topic=12748.0 will help those that haven't had to deal with these issues. Our goal is to get folks back to the line, and helping as needed. Thanks for sharing your experiences. dr144