The Department of Defense, through the Defense Threat Reduction Agency (DTRA), intends to issue a Request for Proposal (RFP) for the operation and maintenance of the International Monitoring System (IMS) waveform monitoring stations in the United States. This contract will cover the management of 14 IMS stations, including eight Infrasound, one Primary Seismic, and five Auxiliary Seismic stations, beginning in April 2026, with a transition period starting in February-March 2026 to ensure continuity of operations. The selected contractor will be responsible for sustaining these custom-designed stations, which are critical for monitoring compliance with the Comprehensive Nuclear-Test-Ban Treaty, and the contract is expected to be a cost-reimbursement or cost-plus-fixed-fee type with a five-year performance period. Interested parties should note that no solicitation documents are currently available, and inquiries will not be accepted at this time; however, the solicitation package is anticipated to be released electronically around December 2025. For further information, potential bidders may contact James N. Robinson at james.n.robinson2.ctr@mail.mil or Pinkesh Patel at pinkesh.m.patel.civ@mail.mil.