By Eric Brandner and Joseph A. Lee

NEW YORK–How did you find out about the USO?

For Tom Flagg, it was a phone call from his Air Force captain son during a layover in Denver.

Years later, Flagg - a Broadway actor - and his wife both volunteer at the USO of Metropolitan New York. Watch the video to see why.

You can send a message of support and thanks directly to service members via the USO’s Campaign to Connect. Your messages will appear on screens at USO locations around the world.