The Missile Defense Agency (MDA) of the Department of Defense is seeking information from qualified sources regarding engineering services and mission planning options for the Medium Range Ballistic Missile Type 1/Type 2 (MRBM T1/T2) program. The primary objective is to identify alternate sources capable of providing Direct Productive Labor Hours for engineering services and eSR-19 Flight Test support, which includes various mission planning activities for air-launched targets. This procurement is critical for supporting the Missile Defense System test program, with a potential sole-source contract to Aerojet Rocketdyne Coleman Aerospace if no other capable sources are identified. Interested parties must submit their responses by August 18, 2025, to the designated email address, and are encouraged to include their capabilities, schedules, and cost estimates in their submissions.