What is a SEAL?

US Navy SEALS are one of the most highly trained and versatile military forces in the world. The are trained in combat for every type of environment, from desert to arctic warfare, as well as hand-to-hand and knife combat. The thing that sets them apart from other units is their diving capability. They can use both open circuit (oxygen tank) and closed circuit (rebreather) diving. They are also trained in free-fall parachuting.