World in Peril is the nonfiction story of the first operational unit in the Strategic Air Command, the 46th Reconnaissance Squadron, assigned SAC's first operational mission, "Project Nanook," - to assess the Soviet threat in the Arctic at the beginning of the Cold War. World in Peril chronicles the unit's development of the Grid System of Navigation which opened up the Arctic skies to world aviation and enabled the Strategic Air Command to become a global deterrent force. The scientific findings of the squadron remain today on the cutting edge of geophysics and give us foresight into future geological events that will reshape our planet and have a profound impact on our global society.