No, not the same actor. The actor who watched the box was also in Boardwalk Empire, and his name is Ben Rosenfield. The actor who played the deputy announcing the arrival of Wally is James David Grixoni.

Due to my hearing disability I often watch shows with closed captions turned on, and I swear during the opening credits when the music starts the captions say "Explosions in the Sky theme music plays" (or something to that effect).