Firing range issues No Trespassing notice Published April 4, 2016 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 AFB, 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, call the 28th SFS Combat Arms NCO in charge at (605) 385-4183, or after duty hours call the Base Defense Operations Center at (605) 385-4001.