The U.S. Army has selected Antares Nuclear, BWXT Advanced Technologies, General Atomics Electromagnetic Systems, Radiant Industries and Westinghouse Government Services to deploy more than 20 nuclear microreactors at five military bases under the Janus program. The initiative provides up to $2.2 billion in federal funding from fiscal 2027 through 2031, with the first unit scheduled to become operational by September 30, 2028. The reactors are designed to produce between 1 megawatt and 20 megawatts of thermal energy, can be factory-built and transported by truck, and may operate for up to 10 years without refueling. The bases will remain connected to commercial grids, while the reactors are intended to reduce exposure to outages and diesel-fuel supply risks. The Army has assigned Fort Bragg in North Carolina to Antares, Fort Campbell in Kentucky to BWXT Advanced Technologies, Fort Hood in Texas to General Atomics Electromagnetic Systems, Fort Benning in Georgia to Radiant Industries and Fort Drum in New York to Westinghouse Government Services. The Army is also preparing a Black Start Exercise between August and September to test installations’ resilience by unexpectedly removing grid power. Private investment is expected to supplement public funding, with investors viewing military deployments as a potential route to commercial applications such as data-center power, while skeptics continue to cite security, regulatory and waste-disposition challenges.