Al fears the worst when he doesn't hear from his family in Afghanistan for a few days. Also, Riley realizes how hard it must have been for his own family while he was deployed.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.