The Air Force Sustainment Center at Tinker AFB, OK 73145 is contemplating a firm-fixed-price, 5-year requirements contract (3-year base plus 2-year option) for remanufacturing liquid oxygen tanks per the Statement of Work. The requirement covers 10 NSN/part-number items with an estimated total BEQ of about 1,335 units plus O&A and data CLINs, with staggered deliveries every 90 or 120 days and early delivery acceptable. Qualification requirements apply, and interested vendors not previously qualified must submit a Source Approval Request package to the Source Development, Small Business Office; the contracting officer need not delay award for qualification. This is a single-source effort, and the part requires engineering source approval by the design control activity to maintain quality. Technical data requests must be emailed on company letterhead with the applicable solicitation number, specific data needed, and a current approved DD Form 2345; electronic solicitation procedures will be used.