. >> reporter: only one of the three escalators at the foggy bottom gwu metro station is working. metro riders have to walk down stairs, and that presents a problem for passengers with children and strollers in tow. >> two kids, stroller, diaper bag, it's hard. i mean, stairs are long. >> reporter: david lingenbacke rides metro daily, and although he's blind, he copes. >> mainly, i can walk down steps like anybody else, but it is a bit of a shocker if you think it's moving and you get on it and it doesn't move, you know. you kind of catapult forward a little bit. >> reporter: and then there are passengers who have physical disabilities and have to climb down the long flight of stairs into the station. tuesday, none of the escalators were working here, and the station was packed with passengers waiting to try to walk up the stairs or in long lines for the elevator. this morning, all of the escalators again went out, and repair crews found three flip-flo flip-flops, summer sandals, stuck inside. at the dupont circle station, two escalators are not working. metro says smoke poured fr