US Air Force to join large-scale aviation exercise in UkraineAn F-15D takes off at RAF Lakenheath, England, in June of 2018. An F-15D from Lakenheath will join Ukraine for the first-ever Clear Sky exercise, scheduled to take place mid-October, primarily at Starokostiantyniv Air Base, Ukraine. (Micaiah Anthony/U.S. Air Force) The U.S. Air Force and eight other nations will participate next month in independent Ukraine’s largest aviation exercise, which aims
