The Thai Marine Recon are one of the world's elite special forces. Their job takes them deep behind enemy lines to clear the path before the main marine brigade hit the enemy. Stealth, strength and speed are needed to make the grade. Infiltrating the communist insurgent base in the notorious tropical jungles of southern Thailand in 1970's, the Thai Marine Recon gathered intelligence and executed successful raids. These men have to be able to operate in the harshest of conditions. Forged from the sea, they need to be as comfortable moving on land and in the air. But before Marine Recon hopefuls can join this unit, they will be toughened by the hardest 3 months of their lives. We reveal what pushes the men to go beyond their limits and what it takes to be in the Thai Marine Recon.