THE EMPLOYEE ARRIVED ON SITE AND WENT TO THE MEDCOR OFFICE. AFTER HE STATED HE FELT BAD WHEN HE GOT UP - SHORTNESS OF BREATH, CHEST PAINS -- HE PASSED OUT. THE MEDCOR EMPLOYEE BEGAN EMERGENCY MEASURES AND HELP FLIGHT WAS CONTACTED. THE EE WAS TRANSPORTED TO BILLINGS AND PRONOUNCED DEAD ON ARRIVAL AT 9:00 AM.