In November of 1989, Robert Scott Lazar gave a series of interviews to George Knapp on KLAS-TV in Las Vegas, in which he claimed to have worked for the U.S. government reverse engineering an alien spacecraft at a hidden base known as S-4, near AREA 51 or Groom Lake. The spacecraft, which Lazar refers to as the "sport" model, reportedly used a radioactive compound with the atomic number 115 to generate gravitational waves. Lazar suggested that he was going public with the story because he feared for his life, and no one wanting to keep a lid on the project would dare to kill him in the public spotlight because that would only draw more attention. At the time, Lazar was ridiculed by scientists who pointed out that no compound with the atomic number 115 even existed. However, in 2004, a team of Russian and American scientists reported the discovery of two new chemical elements, one of which (Ununpentium) had an atomic number of 115. Still, there are reasons to be dubious of Lazar's story. A number of his statements don't check out, including his education and scientific credentials (i.e., he claims to have studied at Cal Tech, but, according to records, actually attended Los Angeles Pierce College.)