48 CFR 34.005-1: 34.005-1 Competition.

(a) The program manager shall, throughout the acquisition process, promote full and open competition and sustain effective competition between alternative major system concepts and sources, as long as it is economically beneficial and practicable to do so. Notice of the proposed acquisition shall be given the broadest and most effective circulation practicable throughout the business, academic, and Government communities. Foreign contractors, technology, and equipment may be considered when it is feasible and permissible to do so.

(b) The contracting officer should time solicitation issuance and contract award to maintain continuity of concept development during the transition from withdrawing concept proposer to new contractor.