F.E. Warren Air Force Base in Wyoming halts Minuteman III communications tester activity after traces of polychlorinated biphenyls (PCBs) are found on AN/PRM-10 test oscillator kits. Air Force Times and Military Times both report that the suspected contamination is linked to the kits used for communications testing.
The base is home to the Minuteman III intercontinental ballistic missile force, with reporting indicating it supports about 150 ICBM systems. Both outlets frame the development as a contamination-related pause in routine testing rather than a change to the missile force itself. While the two reports share the same core facts—PCB traces, AN/PRM-10 test oscillator kits, and the testing halt—their coverage does not provide detailed information on the extent of contamination, how broadly it may have spread, or the specific timeline for resuming operations.