The Department of Defense, through the Naval Information Warfare Center (NIWC) Pacific, intends to award a sole source contract modification to Lockheed Martin to increase the contract ceiling for ongoing support of General Service Cross Domain Solutions and Radiant Mercury for the Department of Navy and other Defense agencies. This modification will raise the contract ceiling by a not-to-exceed amount of $12,028,735, ensuring continued provision of critical services that facilitate secure information sharing across different domains. The current contract, N00039-19-D-0006, is set to expire on September 30, 2029, and the Government will negotiate with Lockheed Martin under the authority of 10 U.S.C 2304 (c)(1) and FAR 6.302-1, as only one responsible source can meet the agency's requirements. For inquiries regarding this modification, interested parties may contact Contract Specialist Jennifer A. Iribe at jennifer.a.iribe.civ@us.navy.mil or by phone at 619-553-0928.