This new Smithsonian program documents the long-ago period when air travel was glamorous, from the spacious seats and elegantly served meals to the individual service and beautiful stewardesses. Some of today’s flight attendants, as they prefer to be called these days, are just as attractive and attentive – hey, I have a flight scheduled very soon, so why risk payback? – but the glitz, like the seat size, has shrunken notably since the early jetliner era recalled in this show.