At the end when the Reverend is dead, his arm is laying across his chest, but in the following shot, as Big Jim walks away from him, his arm is by his side.
The GBU-43/B (Massive Ordinance Air Blast) or "MOAB" is a bomb dropped by a C-130, not a missile. Someone who isn't "too stupid to get a 'real' job" like Mr. King should be smart enough to know that.
(at around 34 mins) When Alice, Norrie's mom, shouts off camera, "Help! Please, we need help," on the right side one of the cameramen is in the shot filming the approaching actors.