42 U.S.C. § 5143 : US Code - Section 5143: Coordinating officers

    (a) Appointment of Federal coordinating officer
      Immediately upon his declaration of a major disaster or
    emergency, the President shall appoint a Federal coordinating
    officer to operate in the affected area.
    (b) Functions of Federal coordinating officer
      In order to effectuate the purposes of this chapter, the Federal
    coordinating officer, within the affected area, shall - 
        (1) make an initial appraisal of the types of relief most
      urgently needed;
        (2) establish such field offices as he deems necessary and as
      are authorized by the President;
        (3) 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
        (4) 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.
    (c) State coordinating officer
      When the President determines assistance under this chapter is
    necessary, he shall request that the Governor of the affected State
    designate a State coordinating officer for the purpose of
    coordinating State and local disaster assistance efforts with those
    of the Federal Government.
    (d) Single Federal coordinating officer for multistate area
      Where the area affected by a major disaster or emergency includes
    parts of more than 1 State, the President, at the discretion of the
    President, may appoint a single Federal coordinating officer for
    the entire affected area, and may appoint such deputy Federal
    coordinating officers to assist the Federal coordinating officer as
    the President determines appropriate.