; (B) that is experiencing symptoms consistent with the condition for which the covered emergency has been issued and is seeking a medical diagnosis; (C) that has been identified as having been exposed to a bioterrorist attack; or (D) otherwise meets criteria determined by the Administrator during the covered emergency period. (7) Indefinite delivery-indefinite quantity contract The term indefinite delivery-indefinite quantity contract means a contract to provide for an indefinite quantity of materials or services for a fixed time. (8) Indian tribe The term Indian tribe has the meaning given the term in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ). (9) Medical equipment The term medical equipment means— (A) N95 respirators; (B) medical ventilators; (C) face shields; (D) medical exam gloves; (E) surgical gowns; (F) diagnostic tests; and (G) such other medical equipment as the Administrator determines to be necessary. (10) National emergency The term national emergency means a national emergency declared by the President under the National Emergencies Act ( 50 U.S.C. 1601 et seq.). (11) Operations of the Federal government The term operations of the Federal government means— (A) the activities and operations of any Federal department or agency that is substantially concerned with the operations or activities required to respond to a public health emergency