Air Force photograph by Senior Airman Devante Williams

Mark Grace, former Arizona Diamondbacks first baseman, speaks with Thunderbolts during a ribbon cutting ceremony April 23, 2018, at Luke Air Force Base, Ariz. The Diamondbacks, together with Arizona Public Service, presented Luke AFB with a new scoreboard for field number three.
 

Air Force photograph by Senior Airman Devante Williams

Mark Grace, former Arizona Diamondbacks first baseman, throws the ceremonial pitch during the scoreboard ribbon cutting ceremony April 23, 2018, at Luke Air Force Base, Ariz. The Diamondbacks, together with Arizona Public Service, presented Luke AFB with a new scoreboard for field number three.
 

Air Force photograph by Senior Airman Devante Williams

Col. Robert Sylvester, 56th Mission Support Group commander, and Mark Grace, former Arizona Diamondbacks first baseman, cut a ribbon during the scoreboard ribbon cutting ceremony April 23, 2018, at Luke Air Force Base, Ariz. The Diamondbacks, together with Arizona Public Service, presented Luke AFB with a new scoreboard for field number three.
 

Air Force photograph by Senior Airman Devante Williams

Staff Sgt. Savier Hernandez-Beltre, 56th Component Maintenance Squadron, hits the ball during a scrimmage matchup after the scoreboard ribbon cutting ceremony April 23, 2018, at Luke Air Force Base, Ariz. The Diamondbacks, together with Arizona Public Service, presented Luke AFB with a new scoreboard for field number three.