HILL AIR FORCE BASE, Utah, June 15, 2026 (Gephardt Daily) — Hill Air Force Base announced late Monday morning that it plans a large rocket motor detonation today at the Utah Test and Training Range. The announcement did not give any estimated time. The detonation will be “part of the Air Force’s ongoing effort to safely eliminate outdated rocket motors,” the announcement says. Before each detonation, the Air Force uses an atmospheric prediction …