Zack Dingo was a paramedic before the shit hit the fan. He initially came to Chernarus on some international aid missions, that he honestly thought would just make him look good. He doesn't particularly have an overwhelming desire to help people, but honestly, he could never force himself to harm anyone during the civil war in Chernarus. A stranger in a foreign land who only speaks English was rough, and it turned out that nobody gave a fuck about him. They didn't care why he was there. They didn't care who he was. That ragged on Zack's ego, he wanted to be the center of attention and he wanted to be appreciated for the work he was doing. Getting none of that and with a contract of a couple of years, he had no other choice but to tough it out and just do the work he was assigned. He was working a 48, as he usually did during the week when the roundup happened. He had heard rumors of the military activity but as long as it didn't bother him it was none of his business. When the military started rounding everyone up Zack, fearing the worst, fled. He initially approached one of the infected seeking aid as he had gotten lost having little knowledge of the land due to being a foreigner.