The Commanders of Operations Group for the National Training Center and the Joint Readiness Training Center, Col. Michael Simmering and Col. David Gardner, participated in the “Lessons Learned for S3s and XOs” elective with Command and General Staff College students April 23, 2020. Discussion focused on warfighting function trends, unit performance, and roles/expectations for field grade officers. (Courtesy photo by Tim Wilson, Center for Army Lessons Learned)