Richard Hammond travels to Fort Bliss in El Paso to learn how to be commander, gunner and driver of an Abrams M1A2 tank in a three-day crash course.
Richard Hammond heads out to try out the dangle head processor, the feller bunchier, and the log loader in a bid to become a lumberjack.
At the Denver Regional Landfill site, Richard operates a bulldozer, a compactor, and a scraper in a mountain of stinky rubbish.
The Striker fire engine is the most powerful in the world. Based at Dallas Fort Worth Airport, Hammond undergoes some gruelling training to be a fireman.
Hammond tries out the track hoe, demolition machine and wrecking ball - and learns it is a far more delicate job than he first thought.