This notice constitutes a combined Sources Sought and Presolicitation Notice. The Air Force Nuclear Weapons Center (AFNWC) requires engineering, logistics, and programmatic sustainment for the Weapon ... This notice constitutes a combined Sources Sought and Presolicitation Notice. The Air Force Nuclear Weapons Center (AFNWC) requires engineering, logistics, and programmatic sustainment for the Weapon Storage and Security System (WS3) Alarm Communications & Display (AC&D) systems. Because this architecture relies on proprietary systems, any interested, qualified respondents must possess verified access to proprietary components and technical data. Please see attached notice for more information.