Are we all brainstorming answers to Q's recent questions, and what they mean?
>How do you defuse a bomb?
>Knowledge of which wires/strings to cut?
Most of the time it's as simple as snipping any wire, really. It's very simple BUT that's not how it's done… the basic procedure is to attempt to control the environment and then blow up the bomb. If it can't be destroyed on-site for any reason, they place it in a mobile containment unit, take it to a range, and blow the crap out of it with some C4.
Contrary to the image portrayed in modern-day movies, the role of the modern Bomb Disposal Operator is to accomplish their task as remotely as possible.
After the bomb has been rendered safe, a Render Safe Procedure can take a great deal of time. A waiting period must be taken to ensure that whatever render-safe method was used worked as intended.