sentences:  The unit accomplished its first overseas deployment in 1981 when members of the squadron participated at Exercise Flintlock 81 in England.The 231st provided the Air National Guard's first radar approach control operations in 1983 at Martinsburg, and it also pioneered the Air Guard's first airspace surveillance support to Camp David beginning in 1983.In 1985, the unit was renamed the 231st Combat Information Systems Squadron.