DCMA intends to award a sole-source firm-fixed-price contract to ManTech Advanced Systems International for the Sentris Silver Enhanced Subscription, a proprietary data security software and maintenance solution needed to secure Special Access Program data through mandatory data marking, attribute-based access control, and cryptographic protection in compliance with DoD, CNSS, and NSA requirements. The contract would have a one-year base period plus four one-year option periods, covering September 30, 2026 through September 29, 2031. ManTech is the OEM and exclusive provider of the required proprietary software for the SAP product line, and no authorized resellers offer it. This is an informational sole-source notice, not a request for competitive proposals or quotes, though responsible sources may submit a capability statement showing clear and convincing evidence that competition would benefit the Government. The DCMA Procurement Center is located in Fort Lee, Virginia.