Late Tuesday night, a Link Light Rail train layovers at Tukwila Station under an eerily-thick-for-Seattle fog. For the next 24 days, Tukwila will mark the south end of Sound Transits new light rail line. In 25 days, SeaTac/Airport Station will become the new south end of the line until 2020, when the tracks are extended south to Redondo/Star Lake. But for now, trains stop here and passengers take a bus to the Airport. During normal hours, two trains layover in the station, but in the late hours, only one train rests tonight.