1990 and 91. We were doing MEDEVAC out of Robert Gray Army Airfield, Ft. Hood Texas. We shared the airfield with a whole slew of A-10's early in the Desert Shield portion of the "war". A few days before the air war started in January, they just disappeared from the field. A few days later, we saw them on TV doing their thing. Ft. Hood has an impact zone and they were making good use of it 24/7.