This CSO is for Airlift Efficiency hosted by the 763rd Enterprise Sourcing Squadron for Air Force Operational Energy Office (SAF/IE). Individual Area's of Interest (AOIs) issued against the CSO will be posted under this notice. 02/26/2025: FA4452-25-S-C001 AOI (1) - Blended Wing Body (BWB) and C-17 Propulsion This AOI is issued under the CSO. All details regarding submission and evaluation factors are provided in the attached documents titled "CSO Solicitation" and "AOI (1) - Blended Wing Body and C-17 Propulsion". This CSO Solicitation is a competitive solicitation that is closed-open until 26 February 2026. Submissions will only be accepted following specific AOI submission due dates and times. The Government reserves the right to extend this CSO beyond the closed date by amendment if the authority is extended.