going for five more days. 24/7 and by the end of monday, they expect to have helped some 50,000 people. david wright, abc new los angle hundreds of peope win nasa s primary shuttle contractor, united space alliance, is laying off more than 300 workers in the houston area. and the utah company that makes shuttle rocket boosters let go more than 400 employees just yesterday. the job cuts follow congress approval of a bill slating the final shuttle flight for next summer. a major personnel shakeup becomes official later today as white house chief of staff rahm emanuel spends his last day in the obama administration. the president is expected to name senior adviser pete rouse as emanuel s replacement. rouse will serve on an interim basis. rahm emanuel is returning to his hometown of chicago to run for mayor. and the president spent last night rallying young voters at a sold-out concert in washington.