In the movie Hurt Locker (2008) (IMDb), near the beginning of the film, Sergeant First Class William James (Jeremy Renner) is in the EOD Suit during his first mission with his new unit, discovers that an IED he disarmed was actually only one part of a multi-part setup. Just as he pulls the cords discovering this fact
the scene moves up to the top floor of the apartment next to the device and we see a man watching Sergeant James. As James starts cutting free the detonators, the man runs down the stairs. Just as the man runs out to the street, James looks up and shows him the final detonator. The man then runs down an alley and drops what looks like a 9 volt battery. We then look at the end of the cord tied to a wall.
Was the man supposed to have detonated the IED? If so, this scene really doesn't make sense. IED's are not suicide devices, but rather remote detonated ones. With 6 or 7 155mm shells chained together, this IED would have destroyed the entire neighborhood.
I've never really understood this scene, except to show that Sergeant James is an reckless adrenalin/danger junky.