Mario Woods left the Air Force in 1983 and soon after went to work for the United States Department of Energy and in the nuclear industry production facilities. His first facility was at General Electric Neutron Device in Largo, Florida as a security inspector, ensuring vigilance of sensitive nuclear materials and other resources. While employed there, he was sent to Los Alamos National Laboratory in New Mexico, assigned as a personal guard to a scientist in the advanced nuclear research facility at area 450 or S-4. His UFO incident in 1977 was featured in 2020 on the program Unidentified. He is a witness and experiencer in what is now known as the Ellsworth UFO Case.