Students from Southwest Middle School and Corral Drive Elementary listen to a speech from Col. David J. Linkh, the 28th Medical Group commander, in Rapid City, S.D., Sept. 11, 2017. Multiple guest speakers came visited schools in Rapid City and Box Elder to speak about the heroism of first responders on 9/11 and educate students. (U.S. Air Force Photo by Airman 1st Class Thomas Karol)