Sole source bridge contract awarded IAW 10 U.S.C. § 3204(a)(1), as implemented by FAR 6.103-1(c)(2)(ii); “services may be deemed as available from only one source […] when awarding a follow-on contract for […] the continued provision of highly specialized services, would result in […] unacceptable delays in fulfilling the agency's requirements.” Specifically, an award to any source other than the incumbent would result in unacceptable delays in fulfilling the agency's requirements. Resulting contract is primarily fixed-price with labor-hour (LH) and time & materials (T&M) CLIN's representing 25.4% of the overall value. LH & T&M CLINs are utilized IAW agency policy & FAR 12.104(b)(1)(i) and FAR 16.601-3(a).