Base conducting exercise July 20 Published July 14, 2016 By 28th Bomb Wing Public Affairs 28th Bomb Wing Public Affairs ELLSWORTH AIR FORCE BASE, S.D. -- The base will conduct a personnel accountability and active shooter exercise, scheduled for July 20. Base and area residents may hear announcements over the “giant voice” system, sirens, response vehicles and simulated gunfire. All personnel are expected to take the appropriate actions in their work centers. The intent of the exercise is to evaluate the 28th Bomb Wing’s ability to react, respond to and mitigate an active shooter incident should it occur on base. There may be delays or issues entering and exiting the base during the exercise. Please plan to arrive early for appointments or call in advance to ensure appointments and services are not impacted. For more information, please contact the 28th BW Public Affairs at (605) 385-5056, or by emailing 28bw.pa@us.af.mil.