Just because you saw something the pentagon has on the history channel it doesn't say this particular soldier got one. Remember all the stories about body armor and GPS receivers that soldiers were having their family send because the DoD ones were hung up in appropriations on the hill. If this guy wants to build something in his spare time, who are we to say he can't. Bear in mind a lot of the things that we take foir granted now were originally made by GIs in the field because of a need unfilled by their own logistic system.