i know this is an unusual question but in the times of ISIS and the like of a heighten state of security i think its a valid question.
i know this is a very unlikely event and terrorist are not carrying AK's round every corner.
what i would like to know is:-
what would happen legally to you if said terrorist was walking down the road shooting people,you where in the position to shoot him(you are at the corner shop with your .270 in the car), should you hide/run or take the shot.(there is no doubt that the person you would be aiming at is a terrorist like the situation in Tunis)
how would you make your self know to the police so you don't get shot or how to lend your assistance with out getting in the way.
The reason i ask is its probably not a good idea to ring firearms up asking question like this and this is the most level headed place i can pose the question.