make an initial appraisal of the types of relief most urgently needed;

establish such field offices as he deems necessary and as are authorized by the President;

coordinate the administration of relief, including activities of the State and local governments, the American National Red Cross, the Salvation Army, the Mennonite Disaster Service, and other relief or disaster assistance organizations, which agree to operate under his advice or direction, except that nothing contained in this chapter shall limit or in any way affect the responsibilities of the American National Red Cross under chapter 3001 of title 36; and

take such other action, consistent with authority delegated to him by the President, and consistent with the provisions of this chapter, as he may deem necessary to assist local citizens and public officials in promptly obtaining assistance to which they are entitled.