This is a market research Sources Sought notice, not a solicitation, for Integrated Base Defense Security System (IBDSS) maintenance services at Grand Forks Air Force Base, North Dakota. The contractor must maintain radars, cameras, thermal imagers, and Sentinel software to ensure all components are operational per the Performance Work Statement. Responses are due by Thursday, 30 April 2026, at 12:00 PM CST. No budget amount is specified. Performance of services will occur at Grand Forks Air Force Base, North Dakota.