"We are deeply grieved by the loss of the patient and our friends and coworkers.  Our thoughts, prayers and support are with their families and friends," Rob Campion, president of Elite Medical Transport said in a statement. "We are cooperating with the FAA and NTSB as they conduct an investigation of the accident.  The NTSB will be the lead agency in the investigation and we request that any further questions be referred to that agency. "