Contract carriers will accept payment through all of the following methods:

• Individually or centrally billed government travel accounts issued under a GSA contract; see Federal Travel Regulation (FTR) 301-72 (41 CFR 301-72.3); and
• Government Transportation Request (GTR).

GTRs may be used when no other is available or feasible for travel related expenses. Special domestic circumstances are defined as acts of God, emergency situations, and when purchasing a domestic ticket in the United States in conjunction with travel that originated overseas.