The agreement formally positions Sikorsky as the prime contractor offering its H-92 medium-lift helicopter for the presidential transport mission, with Lockheed Martin as the major subsystems supplier.
Additionally, the two companies jointly submitted a response to the US Navy's VXX request for information.
The document details how a Sikorsky/Lockheed Martin team would design and manufacture the H-92 helicopter with integrated systems for the Marine One mission.
Both companies have unique experience supporting presidential helicopters.
Sikorsky designed-andbuilt VH-3D and VH-60N aircraft - designated 'Marine One' when the president is on board - have provided safe, reliable transport for the Office of the President since the 1960s.
In 2005, Lockheed Martin won the contract to build the replacement fleet.
The contract was terminated in 2009 at the convenience of the government after the program delivered nine test and pilot production aircraft.