The Department of Defense, through the U.S. Army Contracting Command-Redstone Arsenal, is issuing a solicitation for the Design, Development, Demonstration, and Integration II (D3I2) Space, High Altitude, and Missile Defense Domain 1 (D1). This procurement aims to secure multiple award indefinite delivery, indefinite quantity (MAIDIQ) contracts for research and development services in the physical, engineering, and life sciences, specifically focusing on guided missiles and space vehicles. The D3I2 D1 initiative is critical for supporting the U.S. Army Space and Missile Defense Command's mission and is a follow-on to existing contracts, with proposals due by 1:00 p.m. MST on October 15, 2024, and specific criteria submissions required by October 1, 2024. Interested parties can reach out to Jennifer Baker at jennifer.d.baker2.civ@army.mil or Aaren Strobel at aaren.j.strobel2.civ@army.mil for further inquiries.