give the telelab teleporter a cooldown

[Dr_Bee]

while normally I am all for preventing shit that could be considered unfair, getting killed by this script requires standing still for long enough for it to work. It can also be countered by either taking out the power in telescience or simply cutting the AI cameras. Both can be achieved with basic tools, no fancy rare counters are needed. Dwaine is rarely used enough as it is, some cool scripts existing shouldn't be taken away.