just going osnap it shut -- just going osnap it shut. -- to snap it shut and you are good to go.is going oself-any inflate and -- to receive-inflate and close. >> the sessioning is created by 40 sessions over a 12 week period. >> i'm a little claustrophobic but this doesn't feel too bad. why is this so difficult to diagnose and to treat? >> there are unseen injuries, if you will, somebody gets exposed to a blast or a gunshot wound, i mean can you see the effects of that blast or that gunshot wound. if somebody is exposed to psychological trauma, it's all inside. if there's an invisible wound or invisible scar from psychological trauma, the people around you, family, co-workers shipmates, may not ever know you are sphruferg that wound. >> -- suffering from that wound. >> people say over and over again, i just want my life back. glls i don't like to go to sleep because i know what's waiting for me on the other side when i close my eyes. >> corpsman is one such soldier. he suffered a straw mattic brain injury on a mission in uganda where a shell exploded nearby. >> i can deal with i