The Department of Defense, specifically the Department of the Army, is soliciting proposals for Indefinite Delivery Indefinite Quantity (IDIQ) Multiple Award Task Order Contracts (MATOCs) for Construction Security Monitoring (CSM) Services across Korea. Eligible offerors must possess a Department of Defense Facility Clearance Level (FCL) of Top Secret at the time of submission to access the solicitation attachments, which include technical specifications and drawings for the seed project. These services are crucial for ensuring the security and safety of construction operations at military installations, particularly at Osan Air Base, Korea. Interested parties should contact Su Yong Sin at SU-YONG.SIN@USACE.ARMY.MIL or Jisun Kang at JISUN.KANG@USACE.ARMY.MIL for further details, and note that amendments to the solicitation have been issued on specific dates, with the latest being on June 24, 2025.