I spotted his WW2 Veteran ball cap, and blurted out to my wife "Look, a WW2 vet", then sat beside him and we started chatting. He said what he often hears right after what I said is "...and there aren't many of those left."
We talked about his service a little, and mine (retired Navy, 1988), and he said he's always wanted to find the sailor from the landing craft who opened the big ramp at Normandy and shouted at them to jump. "Man, that water was cold!"
His car wasn't going to be ready for awhile, so the service manager came in and said to him "I have a driver ready to take you to lunch, and here's my card. When you get ready, call me and I'll send him back for you."
Now, THAT is the way to treat a WW2 vet.