Staff Sgt. Reuben Krueger, 5th Civil Engineer Squadron heavy equipment operator, explains to Airman 1st Class Dallas Wainman, 5th Force Support Squadron outbound assignments technician, how to operate an excavator at Minot Air Force Base, North Dakota, Feb. 21, 2019. Participants were allowed to operate various pieces of heavy equipment during the Engineer Week Immersion tour. (U.S. Air Force photo by Airman 1st Class Heather Ley)