The Crazies (2010)

In the town of Ogden Marsh, Iowa, David (Timothy Olyphant), the local sheriff enjoys a baseball game. His deputy, Russell Clank (Joe Anderson), spots Rory Hamill, a local resident, entering the outfield holding a shotgun, presumably drunk. David is forced to shoot and kill the unresponsive Rory when he begins to raise his weapon. David and his wife Judy (Radha Mitchell), the community doctor, begin to notice other town residents exhibiting bizarre behavior, including listlessness and repetitive speech. The next night, a local farmer burns his house down with his wife and son trapped inside, killing them.