Alert team
GREAT PLAINS OF NORTH DAKOTA -- Sixty feet underground, 1st Lt. Nancy Satterfield and 2nd Lt. Eric Doctor refer to one of many manuals used for checking equipment at their control station here. The missileers spend 24 hours underground during a shift. They are assigned to the 742nd Missile Squadron at Minot Air Force Base, N.D. (U.S. Air Force photo by Airman 1st Class Danny Monahan)