James Rollins - Deep Fathom

Ex-Navy SEAL Jack Kirkland surfaces from an aborted underwater salvage mission to find Earth burning. Solar flares have triggered a series of gargantuan natural disasters. Earth-quakes and hellfire rock the globe. Air Force One has vanished from the skies with America's president on board.

Now, with the United States on the narrow brink of a nuclear apocalypse, Kirkland must pilot his oceangoing exploration ship, Deep Fathom, on a desperate mission miles below the ocean's surface. There, devastating secrets await him--and a power an ancient civilization could not contain that has been cast out into modern day, where it will forever alter a world that's already racing toward its own destruction.