At first glance, nothing seemed unusual. But on second glance, I discovered the reason for her willingness to be at the end of the line. The lady was “with child” and apparently felt unable to keep up. Rather than slow others down, or worse, be trampled, she elected to stay back. I’ve written a fair amount about people with handicaps, or to be politically correct, “impairments.” But, being who I am, I never considered pregnancy a “mobility” handicap. A father of three should have realized this before, but there is a big difference between being a “father of three” and…