This time, Lockheed Martin is paired with Sikorsky Aircraft, a unit of United Technologies Corp, offering Sikorsky's S-92 helicopter.
Lockheed's partner on the previous program, Finmeccanica SpA unit AgustaWestland, has teamed up with Northrop Grumman Corp, to submit a possible bid based on AgustaWestland 101 helicopter.
Boeing Co said it is also studying a possible bid based on its H-47 Chinook helicopter or the V-22 Osprey tilt-rotor aircraft that it builds with Textron Inc's Bell Helicopter unit.
The current presidential helicopters are VH-60N "Night Hawks" and VH-3D "Sea Kings," both built by Sikorsky. The fleet is operated by the Marine Corps, but the acquisition program is overseen by the Navy.