We preview a remarkably moving documentary airing on PBS's P.O.V. series- "What We Do To Get By" tells the moving story of senior citizens in Bangor, Maine who have committed themselves to greet each and every plane which lands at the local airport, either transporting U.S. troops to Iraq and Afghanistan or bringing them home from there. We'll meet the co-directors as well as one of the "troop greeters" prominently featured in the film.