PETERSON AIR FORCE BASE, Colo. -- Lindsey Campbell, operations clerk at the Peterson East Child Development Center, works at the front desk behind a plexiglass window April 8, 2020, on Peterson Air Force Base, Colorado. In an effort to reduce the spread of germs, the 21st Civil Engineer Squadron structures recently installed plexiglass panels around Peterson AFB such as, the CDC’s, visitor center, military personnel flight and the United States Space Force and Northern Command Headquarters. (U.S. Air Force photo by Airman 1st Class Andrew Bertain)