I just went through the most intense 20 minutes of my time in DayZ. I was traveling with a survivor group I recently joined, about 7 of us heading to the Balota airfield to regroup with 3 stragglers. Morale was high, seeing that we thought no one would engage a big group like this even if it was very dark. We approached the airfield, and suddenly in a matter of minutes three of our guys were shot down by sniper fire. We didn't take it very seriously, and assumed it was just the three of them acting stupid and got shot by a newbie bandit with a CZ. We were dead wrong.
6 of us advanced forward, while I covered the airfield with my sniper rifle. A few minutes of crawling around later, a plume of dirt shot out in front of me after I heard a crack of thunder. I realized that it must of been a .50 Caliber gunshot, and suddenly more shots flew past my head. I quickly crawled behind a tree as more bullets whizzed past my head. I heard some panic over teamspeak, and three guys died in a matter of minutes from another sniper positioned somewhere else, quickly after I was shot in the head.
I congratulated the sniper over global chat, as it was intense as fuck and I was clearly shaking from the panic over teamspeak. He thanked me and said it was easy since he had a thermal scope on his rifle. Our ten men group was decimated, with only two or three survivors making it. All of it done by two well equipped snipers.