Soldier turned ski-patroller, turned wildfire-firefighter Greg Poirier found his calling in the fast-paced life-or-death world of the air ambulance pilot. Here he gives us the low-down on his life-saving work and the nitty-gritty of his mount, the redoubtable Bell 407HP. What is EMS? EMS stands for Emergency Medical Services. I fly a Helicopter Air Ambulance. What…