Monte Watts bumped into a fellow former Minuteman III nuclear missile operator, who told him that she had non-Hodgkin lymphoma. Within the community of U.S. service members who staff nuclear missile silos scattered across the Northern Rockies and Great Plains, suspicions had long been brewing that their workplaces were unsafe. Warren Air Force Base in Wyoming, Minot Air Force Base in North Dakota, and Vandenberg Space Force Base in California to determine whether they may have contributed to the risk of developing cancer. An Air Force airman is lowered into a training missile silo at Malmstrom Air Force Base in Montana on March 5. The Air Force is wrapping up an investigation into whether nuclear missile bases are unsafe places to work after members reported cancer diagnoses.