The U.S. Army Corps of Engineers is exploring an Integrated Design and Construction (IDaC) approach for secure, ICD-705 compliant facilities at Al Udeid Air Base, Qatar. This is a market research notice only, not a solicitation, to identify capable sources for pre-construction and construction services. Potential projects include hardened combat centers, squadron operations buildings, secure administrative headquarters, and site security infrastructure. Responses to the questionnaire are due by 5 June 2026, 11:59 Eastern Time. No budget amounts or performance timelines are specified in this notice.