JSF as shared classified source code

talk about an area to really figure out a model around sharing and developing source code in a gated environment:

Aviation experts say the sticking points in deliberations likely have been British access to stealth technology, software source code underpinning the aircraft's operations, and agreements on follow-on development of after-market capabilities that U.K. firms could
manufacture and market around the world.
from:

U.S., U.K. Reach JSF Agreement

InsideDefense.com NewsStand| August 02, 2006

U.S. and British defense officials have inked a new agreement on the transfer of sensitive technologies for the Joint Strike Fighter aircraft, removing an irritant in the close relationship between the two allies that has rankled both sides for months.

At a July 18 meeting in London, Kenneth Krieg, the Pentagon's acquisition executive, and Sir Peter Spencer, the U.K. Ministry of Defence's chief of procurement, signed an agreement setting forth a statement of principles for Britain to achieve operational sovereignty of any Joint Strike Fighter aircraft it may acquire, according to Defense Department officials.