Volunteers looks through the rubble of a home destroyed by a tornado in Phil Campbell, Alabama, April 30, 2011. The U.S. government on Saturday ramped up efforts to help thousands of homeless victims of the country's second deadliest tornado outbreak on record that killed at least 350 people. REUTERS/Tami Chappell (UNITED STATES - Tags: ENVIRONMENT DISASTER SOCIETY POLITICS IMAGES OF THE DAY)