Watch a 1940s or 1950s movie set in New York City -- noir, comedy or melodrama -- and you are sure to spot him: strap-hanging on a crowded subway car, buying a newspaper at a kiosk or sitting in a coffee shop.
The anonymous man in uniform is a stock extra in these films, as elemental to the urban landscape as the beat cop, the woman with the baby carriage or the couple in love.
But today, a woman or man in military uniform dining in a restaurant, sitting on a bench in Central Park or walking up Broadway constitutes a spectacle.
I have witnessed this firsthand whenever one of my military colleagues and I have taken West Point cadets to the city to attend a performance or to visit a library or museum. My civilian clothes provide camouflage as I watch my uniformed friends bombarded by gratitude.
These meetings between soldier and civilian turn quickly into street theater. The soldier is recognized with a handshake.
There's often a request for a photograph or the tracing of a six-degrees-of-separation genealogy: "My wife's second cousin is married to a guy in the 82nd Airborne."
Each encounter concludes with a ritual utterance: "Thank you for your service."
One former captain I know proposed that "thank you for your service" has become "an obligatory salutation."