MIL-STD-1521B, MILITARY STANDARD: TECHNICAL REVIEWS AND AUDITS FOR SYSTEMS, EQUIPMENTS, AND COMPUTER SOFTWARE (04 JUN 1985) [NO S/S DOCUMENT; USE SMC-S-21 IN LIEU OF MIL-STD-1521B]., This standard prescribes the requirements for the conduct of Technical Reviews and Audits on Systems, Equipments, and Computer Software.