You're standing in line waiting for your flight to begin boarding as the arriving passengers debark. Suddenly one, two or perhaps a dozen or more military personnel come out off the plane and pass by you. You want to jump over there and shake their hands and tell them, "Thank you," but it just seems so awkward. You don't want to look like some grandstanding showboat.
OK! I have a personal policy that precludes the jail-like booking process of today's commercial air travel. I do however, frequently meet visiting travelers arriving at the local airport (the busiest in the US) and often encounter military personnel arriving and departing. This procedure seems to avoid a lot of potentially awkward situations.
Please steal this video. I did, from HERE.