. >> any way, john mann had a look at this replica and he will talk you through what it is like. here it is. let's roll that. >> as we've been telling you, there are three phoenix capsules on the ground in copiapo, chile. we thought we would build one of our own to give you a sense of how tight a fit it will be. this is made out of wood. it is much flimsier than the 13-foot long capsules built out of met balance the help of nasa designers. if you get in, you get a sense of how tight this is. it is about as comfortable as a coffin. close the doors and you feel like you're in some kind of really bad telephone booth. the difference is though, i can see out to the light of day. it is not claustrophobic. but a man moving through 620 meters of rock is going to see basically rock and danger and darkness in every direction. the men will have audio contact with the surface. they'll have video contact with the surface. they'll have okay general. some experts that it might be a good idea to sedate the men themselves considered the journey so anybody racking. that was a bad idea because they