Cut verb – To penetrate with a sharp edge (as a knife). Shut down and cut are semantically related. In some cases you can use "Shut down" instead a verb "Cut". Nearby Words: cutting, cutter, cutout
Shut down verb – Cease to operate or cause to cease operating. Cut and shut down are semantically related. Sometimes you can use "Cut" instead a verb "Shut down".
However the bomb gets damaged and refuses to shut down so Jack is told to open it and cut the Red wire, so this trope is almost subverted because he is given clear instructions to cut a wire, but here's the kicker - it turns out all the wires are yellow and he has to guess.