48 C.F.R. § 17.403 – Procedures.

(a) The contracting officer may award a prime contract to a—
1. (1) Leader company, obligating it to subcontract a designated portion of the required end items to a specified follower company and to assist it to produce the required end items;
2. (2) Leader company, for the required assistance to a follower company, and a prime contract to the follower for production of the items; or
3. (3) Follower company, obligating it to subcontract with a designated leader company for the required assistance.
(b) The contracting officer shall ensure that any contract awarded under this arrangement contains a firm agreement regarding disclosure, if any, of contractor trade secrets, technical designs or concepts, and specific data, or software, of a proprietary nature.