Death Wave. Stephen Coonts and William H. Keith

The theft of nuclear artillery shells spells disaster for Charlie Dean. He leads the National Security Agency's crack undercover team, Deep Black: Desk Three, whose job it is to neutralise the threat. The terrorist plot is headed by an Islamic terrorist codenamed 'the Jackal'. He aims to destroy the West by detonating the shells deep inside the Cumbre Vieja volcano on La Palma, Gran Canaria. This would send a tsunami across the Atlantic Ocean, straight to the East Coast of America. Charlie and his team have only days to prevent the devastation of the Western World.