Previously, Capt Callies worked as an Acquisition Manager on the Joint Space Operations Center Mission System and as a Launch Mission Manager for Evolved Expendable Launch Vehicles. She enlisted in the Air Force in 1997, working as a Supply Manager until she commissioned in 2013. Capt Callies holds a Bachelor of Science in Management Studies from the University of Maryland University College and a Master of Science in Project Management from Embry Riddle Aeronautical University. Her previous assignments include Spangdahlem AB, Germany, Davis-Monthan AFB, Arizona, Kunsan AB, Korea, Hill AFB, Utah, and Vandenberg AFB, California. She has deployed to Kuwait, Iraq, and Djibouti in support of Operations SOUTHERN WATCH, IRAQI FREEDOM, and ENDURING FREEDOM.