I have run into a slight problem with my airlines. I am in a wheelchair and I am constantly running over them as well as getting tangled up in them. I am hoping that I am not the only one that has dealt with this problem and perhaps someone can share how they got around this problem. Any help would be greatly appreciated. I have some tanks that I can refill at home but negotiating around with the tank is another problem that I am trying to deal with as well.