b'1955 1961 1962 Aircraft Nuclear Propulsion Stationary Low-Power Reactor Small Mobile Power PlantThree Heat Transfer Experiments wereThe darkest hour in the history of NRTSA mobile prototype developed byconducted as part of the Aircraft Nuclearwas the January 1961 accident atthe U.S. Army.Propulsion program, the U.S. Air ForcesStationary Low-Power Reactor number attempt to develop a nuclear-poweredone, which killed three men. jet aircraft. 1959Transient Reactor Test FacilityThe Transient Reactor Test (TREAT) Facility was a reactor designed to produce short, controlled bursts of nuclear energy that would simulate accident conditions leading to fuel damage. 1963Experimental Breeder1957 Reactor No. 2EBR-II achieved its first criticality in Engineering Test ReactorNovember 1963, representing the next Five years after the Materials Testevolutionary step in the march toward Reactor came online, the Engineeringcommercial-sized breeder reactors. Test Reactor represented a significant advancement in testing capabilities. 19631958 Waste Calcining FacilityThe first Waste Calcining Facility and the Large Ship Reactors adjacent Calcined Solids Storage Facility As nuclear fuel evolved, the U.S. Navybegan operations, revolutionizing the adapted nuclear power to surfacemanagement of liquid radioactive vessels.A pair of prototype reactors forwaste.the USS Enterprise enabled training for aircraft carrier reactor operators.'