I'm dreading that situation... but I'd do the exact same thing as you. Anyone with a weapon out who hasn't said "friendly" ASAP is going to get it. I just started playing tonight and had my first serious moral dilemma. I was scavenging in a farm when I heard a few shots fairly close to me. I peeked out of a door and saw a survivor being chased by 3 Zeds. All I had at the time was a hatchet so I decided to wait until he was close enough for me to come to his aid. Unfortunately, by the time he was close he had 3 more zeds running at him. I made the decision not to intervene and risk being killed by the zeds. So I stayed in the house while he was killed by the zeds. I actually felt terrible for not jumping in... But I don't mind having his shotgun! Update: I died. By murder... sort of. I made what I now believe was a noob error. I was in a small inland town and had looted the entire thing. I had the shotgun, a makarov, heat packs, bandages, cokes, beans, 3 morphines... I was feeling pretty good... It started to rain and I had to leave shortly so I figured it was a good time to disconnect. I found a house, crawled into the corner and disconnected. Big.mistake. The next time I connected this house had been made into a fortress. I could hear 3-4 people in the town wiping the zombies out with automatic fire, I could see barbed wire in the hallway and pretty much freaked out! haha. I got on DC and said "I'm on the outskirts of the town... are you friendly?" They immediately indicated that they were. However, I had made my second mistake... They regrouped in the house. It unfolded in about 5 seconds. A guy sprinted into the house and into my room. He just stopped in the doorway and looked at me. I fired first. It was just reaction from FPS games I think, because I'd made the conscious decision that I'd rather be killed than kill on my first character. A right of passage I suppose. So as I'm flailing away with my makarov he puts 3-4 assault rifle bullets into me and down I go. My fault... almost entirely. It really makes you think about how you'd react in real life. I thought I knew, but now I'm not so sure!