"The Draeger could be dangerous at depths much below thirty feet, so Juan planned to stay close to the surface. In a slim waterproof pouch strapped under his right arm he had a minicomputer, a flashlight, and a Fabrique Nationale Five-seveN double-action automatic. The pistol fired the new 5.7mm ammunition. The advantage of the small, needlelike cartridges was that the matte-black weapon's grip held twenty rounds with one in the chamber. Also, the bullets were designed to blow through most ballistic vests while at the same time not overpenetrate a target."