When the team departs to rescue the civilians from the embassy they take off from the carrier in a Huey and two CH-46 Sea Knight helicopters. In the next shots over the desert and all subsequent shots, the CH-46s have turned into CH-47 Chinook helicopters. The most distinguishable differences between these helicopters are, the Chinook has two large engine nacelles at the rear of the fuselage and two front landing gear. The Sea Knight has internal engines and a single front gear.