8/7/2025: Amendment made to Attachment 3, White Paper Requirements. See updated attachments. 5/9/2025: The Missile Defense Agency (MDA) Advanced Capability Concepts solicitation provides industry an ongoing opportunity to present the Government with new, unique and innovative ideas. This solicitation seeks innovative concepts, technological innovations, prototype demonstrations, and scientific breakthroughs that will significantly enhance the robustness and effectiveness of all Missile Defense System elements. White papers will be accepted any time during the five (5) year period of the solicitation. See attachments for full details. [Note: This soliciation is issued under the MDA Multiple Authority Announcement, HQ0860-25-S-0001]