ACC down day and Federal holiday Published June 28, 2010 By Airman 1st Class Jarad A. Denton 28th Bomb Wing Public Affairs ELLSWORTH AIR FORCE BASE, S.D. -- As a reminder to all Airmen on base, July 2 is an Air Combat Command down-day. Airmen will receive the day off for the down-day. Under the current rules for Department of Defense civilians, commanders can encourage liberal leave, use of previously earned compensatory time or use of already approved time-off awards. July 5 is listed as the recognized Federal Holiday, which gives both Airmen and DOD civilians at Ellsworth the day off.