I found this gem
3. Involuntarily Denied Flight Boarding. A traveler who is involuntarily denied boarding on a flight must contact the TMC to book a new flight if a subsequent flight cannot be provided without additional cost to the Government. Any compensation for the denied seat belongs to the Government (59 Comp. Gen. 203 (1980)). The traveler must request that the carrier show the “Treasurer of the United States” as payee on the compensation check, in accordance with DoDFMR, Vol. 9.