The Department of Defense, through the U.S. Army Corps of Engineers (USACE) - Tulsa District, is seeking qualified architect-engineer firms to provide Master Planning Services under a $450 million Indefinite Delivery Contract (IDC). The procurement aims to solicit professional, multi-discipline A-E services primarily within military and civil boundaries across Texas, Oklahoma, Louisiana, Arkansas, and southern Kansas, in accordance with relevant regulations and acquisition instructions. These services are critical for effective military and civil infrastructure planning, ensuring that the government can maintain and enhance its operational capabilities. Interested firms, particularly those classified as small businesses, Section 8(a), HUBZone, Service-Disabled Veteran-Owned Small Business (SDVOSB), or Woman-Owned Small Business (WOSB), are encouraged to respond by the extended deadline of January 16, 2026, and can direct inquiries to Thomas Howard at thomas.howard@usace.army.mil or by phone at 918-669-4389.