So Tuesday around 11am I'm about an hour south of Macon GA on Hwy 23 and come over a little rise in the road and I pass 3 people walking their bikes, on the wrong side of the road, and get a sense they might need help. I turn around and they tell me they are traveling from Knoxville TN to Florida to visit a sick grandparent. They were walking on the wrong side of the road because it had more shade. The son's (William) bike had a major problem with the rear wheel hub, as in it was super loose. I try to adjust/tighten it (happened to have my bike tools with me), it's still way sloppy, so I take it off the bike to inspect it and find it is missing one of the bearings. They were walking to the next town 15 miles ahead to see about getting it fixed. If they were walking at 4 miles an hour it would take them nearly 4 hours to walk into town. I tell them I will take William and the bike into town to try and get it fixed. Before William and I leave, I pump up everyone's tires - all of them had 20 psi or less and they should have had 65 psi. The mom and dad were both pulling trailers with camping gear in them, and their 3 dogs! One trailer had one dog, the other one had two. So I take William and his bike to town, talk to someone the hardware store and explain the situation and he said he would try to help him. I head back north and find the mom and dad riding along, I stop and tell them that William is at the hardware store, wish them luck and continue on my way.