Metro stations packed ; nine more hours to get home . Possible plot from African-American group ; threat level remains same . 9 agencies are involved in the massive inaugural security effort . Because of crowding , parts of Metro General were closed off at 58 a.m .
Metro stations packed ; some wait hours to get home . Possible plot from Somali group ; threat level remains same . 58 agencies are involved in the massive inaugural security effort . Because of crowding , parts of National Mall were closed off at 9 a.m .