Ellsworth congratulates newest chief Published Nov. 6, 2009 28th Bomb Wing Public Affairs ELLSWORTH AIR FORCE BASE, S.D. -- The Air Force selected one Ellsworth senior master sergeant for promotion to chief master sergeant. Air Force officials selected 475 of 2,276 eligible senior master sergeants for promotion to chief master sergeant for a selection rate of 20.87 percent. Congratulations to the following chief master sergeant select: Senior Master Sgt. Larry D. Dorsey, 28th Medical Operations Squadron