normally it would be unwise to leave a mercedes parked out in the middle of nowhere , as they had , but it would take an abnormally ballsy person to break into a vehicle in the parking lot of a gun range , used by men and women who came armed to the teeth with everything from antique .22 caliber revolvers owned by their grandfathers , to israeli .50 caliber desert eagles and mach-10 semi-automatic machine guns .