The United States Atomic Energy Commission was the civilian agency that controlled the country's nuclear weapons and atomic energy programs from 1947 until 1975. Created by the Atomic Energy Act of 1946, signed by President Harry Truman that August, it took over the plants, laboratories and staff of the wartime Manhattan Project on January 1, 1947, moving atomic energy into civilian hands. It ran laboratories including Los Alamos, Argonne and Oak Ridge, added Livermore in 1952 and later both promoted and regulated nuclear power. The Energy Reorganization Act of 1974 abolished it, splitting its work between the Nuclear Regulatory Commission, which opened on January 19, 1975, and an energy research agency later absorbed by the Department of Energy.

Its secrecy system outlasted it. The 1946 law introduced "Restricted Data," covering all data on atomic weapons and nuclear materials, so that such information was classified from the moment it existed. The commission's first clearance chief also created the Q clearance that still governs access to it. Both carried into the Atomic Energy Act of 1954 and are now administered by the Department of Energy. In 2026 those rules became central to UFO secrecy arguments. In his May video "The Manhattan Project 2.0," the researcher UAP Gerb argued that a crash-retrieval effort founded in 1947 borrowed wartime compartmentalization and placed recovered craft with commission laboratories, and posts drawing on his work argued that the 1954 Act would block any presidential disclosure. The statute's text does not mention UAP or non-human technology.

It also figures in individual testimony. Harald Malmgren, a former trade negotiator, said in 2024 posts and a January 2025 interview with Jesse Michels that the commission had given him "a blanket Q clearance" in 1962, and that commission official Lawrence Preston Gise had briefed him at Los Alamos that November about an object brought down during a nuclear test. Journalist Douglas Dean Johnson found that Malmgren's security forms, FBI clearance records and job applications listed no commission clearance, and in an August 19, 2026 letter the National Nuclear Security Administration said he had never held a Department of Energy access authorization.

Other accounts place the commission at the start of the story. In November 2024 Liberation Times reported an anonymous source's claim that, from 1946, the commission worked with Italian and German scientists at Wright Field to reverse-engineer the craft said to have been recovered in the 1933 Magenta incident; the report offered no documents, and the commission took over the atomic program only in January 1947. The documented record is narrower: the commission's Los Alamos laboratory hosted a 1949 conference on green fireballs seen over New Mexico, and its transcript, released by the Department of Energy in July 2026, shows scientists weighing meteor and electrical explanations without reaching an identification.

The commission existed for 28 years, but its system of Restricted Data, Q clearances and contractor-run laboratories passed intact to its successors. That is why crash-retrieval secrecy arguments so often run through the atomic establishment, and why the clearest test of one such claim came when the Energy Department's nuclear security agency searched its records and found no clearance for Malmgren.