no, dont soak the blanket as this can lead to steam burns.
knowing when to exit is hard. yesterday evening on KI we had a whole division trapped. not a truck, not a strike team, not a sector, a whole division.
ive just realised you meant something different...
knowing when to exit is hard.
after the flame front has passed, get out and check under your car. hopefully you chose a good spot to park. bare earth, a road, already burnt ground.

