emergency or disaster
(1) Emergency or disaster The term “emergency or disaster” means— (A) an emergency or a major disaster, as defined in paragraphs (1) and (2), respectively, of section 5122 of title 42 ; or (B) an emergency or disaster situation of national significance that could result in a potentially large loss of employment, as declared or otherwise recognized by the chief official of a Federal agency with authority for or jurisdiction over the Federal response to the emergency or disaster situation.