sentences:  Numerous military aircraft also arrived, including the C-5 Galaxy.Airbus Industrie arrived at the show to promote their A300, claiming that the longer-ranged A-300B-4 variant would present strong competition in the U.S. domestic market due to operating costs being 5 to 7% lower than the L-1011 and DC-10 trijets.Noting that the original contract that led to the trijets had called for a twin-engine aircraft, Ken Gordon of Airbus North America claimed that the original specification still needed to be filled.