Airfield operating hours extended Published July 10, 2013 ELLSWORTH AIR FORCE BASE, S.D. -- The 28th Bomb Wing will be extending its airfield operating hours from July 15 through the early morning of July 19. Normal quiet hours on the airfield begin at 12:30 a.m., however they will be extended to 2 a.m. during this timeframe. Base residents and the surrounding communities can expect to hear noises associated with flying aircraft and maintenance activities. For more information, call the 28th BW Public Affairs Office at (605) 385-5056.