After I didn't receive any answers I contacted Bill directly. Just a few minutes later he answered me via iphone (now that's what I call a fast service! Thank you Steve Jobs, thank you Bill Gibbs ):
For simplicity the same column would be used. You are free to reduce it as you see fit. That might be a great optional rule.
The Rangers on the stretcher would not fire. The Rangers carrying the stretcher would have put it down and fired.
Sent from my iPhone