oil spill. take a listen. >> one of the things the president wants to make sure is that we're not going to rest until these leaks are stopped, the well is killed, and oil is cleaned up. >> reporter: the president already has sent his homeland security secretary, his interior secretary, and the epa administrator to the region to oversee the federal response. >> gregg: the department of defense, are they part of the national guard? >> yes. defense secretary robert gates mobilized the louisiana national guard to go to the region as well. defense spokesman says the guard will, quote, help in the ongoing efforts to assist local communities in the cleanup and removal of oil, and to protect critical habitats from contamination. as the responsible party in this incident, the government will hold bp accountable for the cost of this deployment. and we've also learned that the pentagon will send two c 130 aircraft to the gulf region on request of the coast guard to help spray a chemical to try to