(A) the government of the United States or of a state, the District of Columbia, or the Commonwealth of Puerto Rico, and an interstate governmental organization, or a unit, subdivision, or instrumentality of any of the foregoing;
(B) a foreign government or international organization, or instrumentality of either, which is designated by the Governor as eligible to provide training under this subchapter;
(C) a medical, scientific, technical, educational, research, or professional institution, foundation, or organization;
(D) a business, commercial, or industrial firm, corporation, partnership, proprietorship, or other organization;
(E) individuals other than personnel of the Government; and
(F) the service and property of any of the foregoing furnishing any training.