The Seabees are the U.S. Navy's Mobile Construction Battalion who can build a military base from the foundation up, anywhere in the world. Their work encompasses everything from roads and airfields to electrical grids and sewers. The Seabees must be versatile because they never know what they'll face or what materials they'll have on hand. In this one hour special, DIY Network travels to the Seabee school in Gulfport, Miss., where new recruits are trained in all aspects of construction plus all the vital combat skills they'll need when deployed on their missions.