Andrew Desany is a Navy SEAL Commander in the United States. Navy SEALs are the U.S. Navy´s primary special operations force and a component of the Naval Special Warfare Command.

The Navy SEALs main functions are conducting small-unit special operation missions; and they are trained to operate in all the environments (Sea, Air and Land) for which they are named.

SEALs are also prepared to operate in climate extremes of scorching desert, freezing Arctic, and humid jungle. The SEALs’ current pursuit of elusive, dangerous and high-priority terrorist targets has them operating in remote, mountainous regions of Afghanistan, and in cities torn by factional violence, such as Baghdad, Iraq.

Colin Browning is a Marine Corp Infantry officer. Infantry Officers lead attacks, defensive operations, and other tactical missions. They are responsible for the discipline, morale, and welfare of their unit's personnel.

To fulfill these responsibilities, they evaluate the operational situation and lead their troops in executing offensive and defensive maneuvers.

Because infantry officers must be prepared to lead their troops anywhere in the world that the infantry is needed, they work and train in all climates and weather conditions. During training exercises, as in real combat situations, infantry officers work, eat, and sleep outdoors and in tents.