The Department of Defense, through the Naval Air Systems Command (NAVAIR), is seeking proposals for a single source Indefinite-Delivery/Indefinite-Quantity (IDIQ) contract to provide Contractor Logistics Support (CLS) services for the C-40A aircraft, which includes seventeen (17) United States Navy (USN) aircraft and two (2) United States Marine Corps (USMC) aircraft. This procurement aims to ensure the operational readiness and maintenance of these aircraft, which are critical for tactical airlift missions. Interested parties are required to submit their proposals by 4:00 PM EST on April 28, 2025, following an extended preparation period, and may request access to technical library documents via email to the designated contacts, Karin Jensvold and Jessica McGee. For any inquiries, questions must be submitted by 12:00 PM EST on March 31, 2025, using the provided Industry Worksheet.