Col. Chad Heyen, the 28th Maintenance Group commander, center, discusses the capabilities and innovation opportunities of the Metals Technology and additive manufacturing facility with Maj. Gen. Mark Weatherington, the 8th Air Force and Joint-Global Strike Operations Center commander, left, during his visit to Ellsworth Air Force Base, S.D., May 4, 2021. Heyen talked about the ‘Doolittle Raider-type innovations’ that Airmen of the 28th Maintenance Group are developing. (U.S. Air Force photo by Senior Airman Michael P. Ward)
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