nation and the thing to remember also is that these are regular guys, martha. you wouldn't know these guys if you were walking down the street in virginia beach. they are fathers, they are sons, they are brothers, just great americans, and i guarantee not a one of them would say that they are extraordinary, they are ordinary men doing extraordinary things for our country. martha: they have to go through so much to even get to that level, physical work, i was reading carrying 40 pounds of gear, running 40 miles, the kind of thins that most of us cannot even imagine physically being able to pull off. the kind of intense training. give us some sense of what that is like, christopher. >> the initial training is considered to be some of the most arduous, tough, military training in the world. here is the important thing to remember about this mission. this isn't just regular seals, these are the best. these are guys that should be held on a pedestria pede stal.