Indefinite Delivery Contract HQ085926DF061

The Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) Multiple Award Indefinite Delivery Indefinite Quantity (IDIQ) contract, awarded by the Missile Defense Agency (MDA) on December 29, 2025, represents a comprehensive $151 billion, 10-year federal contracting vehicle designed to procure advanced multi-domain defense systems and related capabilities. Under this full and open competition award with no set-asides, Castalia Systems LLC has been selected as one of multiple awardees to support the MDA's national defense objectives through research and development, prototyping, systems engineering, weapon design, production, test and evaluation, cybersecurity, and modernization efforts. The contract ceiling extends through December 28, 2035, and encompasses work across all phases of flight for ballistic, hypersonic, cruise, and advanced aerial threats, as well as air, missile, space, cyber, and hybrid threat detection, tracking, interception, and neutralization capabilities intended to protect the United States homeland, deployed forces, allies, and partner nations.

Task orders issued under the SHIELD IDIQ will utilize various contract types across multiple North American Industry Classification System (NAICS) codes and classification levels, enabling the MDA and other Department of Defense entities to rapidly procure specialized capabilities from qualified contractors. Castalia Systems LLC, an SBA-certified economically disadvantaged women-owned small business based in Odessa, Florida, is positioned to deliver systems engineering, cybersecurity services, artificial intelligence development, data management solutions, and digital engineering support aligned with the contract's emphasis on advanced technologies and open systems architectures. The contract structure supports both classified and unclassified programs across multiple security domains, establishing a flexible long-term procurement mechanism that consolidates homeland defense capability development under a single enterprise vehicle. Individual task order values, performance locations, and specific technical requirements will be determined through subsequent competitive orders issued under the IDIQ's established terms and conditions.