I saw the movie for the first time a few days ago, and near the end Russel Crowe is being chased by the bad guys. He plants a mine, runs wire, hides, and detonates the mine from a distance with a hand-held unit that was actuated by a lever. Here's the dumb question: What's that detonating unit called? And are they available on the civillian market? And if so, suggestions on where to get one? Thanks for your forbearance.