It’s a tragically normal way for Vincent Barkas to start a workday: trudging through a South African game park to reach a rhino carcass.The beast is lying under some brush, its nose a mere stub where a horn once was. The group — Barkas and some employees along with local officials — form a circle around the body. Today he’s training a first-time cutter, showing her how to run a utility knife through the rhino’s tough skin.The stench is overpowering, but Barkas doesn’t wear a mask or gloves as he pushes his hands inside the body in search of the poacher’s bullet. He’s overseen hundreds of rhino autopsies — something that a decade ago he couldn’t have fathomed.Related: Report: Militia poaching taking huge toll on African wildlifeEventually, the team finds the bullet near a rib and hands it to a police officer to keep as evidence. Then it’s back to base camp and on to another case.Barkas, a white South African, is a former soldier and founder of ProTrack, South Africa’s first private anti