Beerboarding?
I have a friend who was a Navy Seal. He didn't talk much about his experiences in training, but I got the idea it was quite rigorous.
http://findarticles.com/p/articles/mi_m0IAX/is_6_86/ai_n6220836/
Living off the land is often romanticized in movies, books and television as peaceful
coexistence with nature, where food is delicious, nutritious and easily obtainable and shelter
is convenient. The reality of wilderness survival is more likely to include life-threatening
injuries or illness, hunger, exposure to the elements, fatigue and, under wartime conditions
behind enemy lines, constant movement to evade pursuers. Today’s sailors and Marines are
living in a fortunate age when there are very few times that finding an insect under a rock
conjures up the thought, “What a good source of protein.” On the other hand, there are
worse things than eating insects. The field instructors of the Survival, Evasion, Resistance
and Escape (SERE) School prepare students to know what to do when things go from bad to
worse.
As a part of Fleet Aviation Specialized Operational Training Group Pacific, NAS North Island, Calif., SERE School is actually an advanced code of conduct course. All military personnel get their initial code of conduct instruction during basic training in which they’re taught an American service member’s legal responsibilities regarding capture by enemy forces. But SERE training goes far beyond that. Because the school is a combination of courses designed for personnel with jobs that entail greater than normal risks of being stranded behind enemy lines or captured by enemy forces, students get a deeper insight into the philosophies behind the code. Aviators, aircrewmen, and special forces and force reconnaissance personnel are the types of jobs that require SERE School training. The instruction starts with classroom work, and for several days it focuses on real-world applications of the code of conduct for a service member. After the classroom, students board a bus and end up at the Navy’s remote training site near Warner Springs, Calif., ready to break down the acronym SERE into individual lessons. Here, they begin with the survival and evasion portions to learn methods of avoiding capture by the enemy. Eventually, they’ll be captured and enter resistance and escape training.