Defending a nation is no easy task, one mistake and billions of dollars and countless lives can be lost. In this series, viewers explore the most difficult and dangerous jobs on land, in the air, at sea and at military bases. Each episode focuses on one specific area of the military and the tasks necessary to keep every person safe. It also features high tech equipment operating at the highest calibre and in strong demand from the world's most powerful fighting forces. From the dangerous to the extreme and the downright dirty, these are the Toughest Military Jobs.