His latest book, Keep Out! Top Secret Places Governments Don’t Want You to Know About, is a study of worldwide secret government and military installations such as the United States’ Area 51, Hangar 18, the Dulce, New Mexico underground base, and the HAARP facility in Alaska; Royal Air Force Rudloe Manor in England; China’s secret Sanya installation; Australia’s Pine Gap; Russia’s very own Area 51; and even claims that there is a secret base on the far side of the Moon.