Combat Arms Firing Range No Trespassing Notice Published April 24, 2020 By 28th Security Forces Squadron 28th Security Forces Squadron ELLSWORTH AIR FORCE BASE, S.D. -- The 28th Security Forces Squadron Combat Arms Firing Range Complex, located at 2642 Scott Dr. in the northeast corner of Ellsworth Air Force Base, is off limits to all unauthorized personnel.Firing operations are conducted during day and night hours and can be extremely dangerous. The firing range is a no trespass area.For more information or to gain valid entry to the range during duty hours, please contact the 28th SFS Combat Arms non-commissioned officer in charge at (605) 385-4183. For after duty hours, contact the Base Defense Operations Center at (605) 385-4001.