; (II) shall be found only when required to meet the mission of the agency in which the covered employee or the agency head is employed, or to which the covered employee is applying, as applicable; and (III) include a situation in which— (aa) the use of accommodations other than first-class accommodations would endanger— (AA) the life of the covered employee or the agency head; or (BB) Government property; (bb) the covered employee is— (AA) an agent on protective detail; and (BB) accompanying an individual who is authorized to use first-class accommodations; or (cc) the covered employee is a courier or control officer accompanying controlled pouches or packages; and (B) business-class accommodations for official travel if— (i) the use of business-class accommodations is necessary because of a situation described in clause (ii) or (iii) of subparagraph (A); (ii) coach-class accommodations on an authorized or approved foreign airline do not provide adequate sanitation or health standards; (iii) (I) regularly scheduled flights between origin and destination points, including connecting points, provide only other than coach-class accommodations; and (II) the covered employee or the agency head certifies, on the voucher of the covered employee or the agency head, that the situation described in subclause (I) applies; (iv) the transportation costs of the covered employee or the agency head are paid in full through the acceptance by the agency in which the covered employee or the agency head is employed, or to which the covered employee is applying, as applicable, of payment from a non-Federal source in accordance with chapter 300 of title 41, Code of Federal Regulations, or any successor regulation; (v) subject to paragraph (5), with respect to a situation in which the origin or the destination of the travel is outside the continental United States— (I) the scheduled flight time is more than 14 hours