1. open Game Master
2. place one of the US, RU or FIA Special Forces Sapper and take control of that unit (press C)
3. place the explosive charge on the ground or on a surface
4. equip the detonator and connect it with the explosive charge
5. try to press and hold F -> nothing will happen
6. hold R -> mouse wheel to "Detonate Charges" -> hold F -> !!!boom!!!