I heard some shots coming from a nearby town, so I went to check it out.
Spent about 10 minutes approaching slowly, hearing gunshots regularly.
After hiding behind a tree waiting to see if someone was close, I decided to begin my entry into the town.
Before long I heard another gunshots. This was good because it meant they were occupied with something, and I could get my water safely.
Immediately afterwards, I heard another gunshot. And i was dead.

Apparently there was a sniper in the area. The problem is that I never got any clue that I was being shot at.
The thought crossed my mind, that I was the one being shot at. But I quickly dismissed that thought, because I know I would be able to hear the supersonic crack as the bullet travels by.
I never heard such a crack.

Also. The shot that came right before the one that killed me, it never made any noise hitting ground.