Both contract and open market fuels may be purchased through the SEA Card® Online Program. Fuel purchase will be billed to DLA Energy. Also, non-fuel charges such as demurrage, overtime charges, and backhaul may be transacted through the SEA Card® Online Program, provided the charges authorized by the cardholder or Accountable Official (AO). Such non-fuel charges will be billed to, and paid by, end units, while fuel purchases will be billed to DLA Energy.