I flew MSP-LGA on a 757 a couple of years ago and there were 26 wheelchair pax's on that flight. There was a softball tournement in NYC for disabled people that they were attending. Our flight was delayed 90 minutes due to boarding that many people that required assistance. Many were not able to be mobile at all from the waist down. I was inspired by their level of drive to play the game. Very interesting discussions with them while we were all waiting.