Impairment investigated in crash near Lake Pleasant

COMMISSION SAYS EIGHT ENGINES AND THREE HAND CREWS ARE ON THE SCENE TONIGHT. NO WORD YET ON HOW THIS STARTED. THAT SAME HIGHWAY WAS SHUT DOWN EARLIER TODAY BECAUSE OF A CAR CRASH. FOUR PEOPLE WERE RUSHED TO THE HOSPITAL, ONE OF THEM SUFFERING LIGHT THREATENING INJURIES, PERIOD. FIRE AND MEDICAL CREWS SHARING THESE PICTURES FROM THE SCENE. DPS TROOPERS SAY IMPAIRMENT MAY HAVE PLAYED A