We have been lucky that we've come across survivors that are basically good people - some of them have been annoying and some have stolen things, but nobody has caused physical harm. The flashing lights we came upon were survivors who attempted to carjack us.
As we approached the lights we saw that their vehicle had gone in the ditch so some of our guys got out to help. The next thing we saw was them pulling guns on us and demanding we get out of the vehicles. There were 7 of them and 18 of us so giving in to their demands wasn't going to happen. Then the idiots started firing on us - this might be a good time to explain that it was clear these people were under the influence of drugs and/or alcohol. The level of paranoia and rage was pretty scary, anyway, we had to fire back before they hurt us or the vehicles.
I could say that it was survival of the fittest and a bunch of other crap like that, but the truth is none of us felt good about taking out survivors. The reality is if there were bad people before zombies, there will be bad people after zombies.
Roger, I figure we are about 15 miles away and should be reaching you tomorrow.