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NBC Pentagon correspondent Hans Nichols gets an up-close look as a U.S. Air Force F-15C Eagle assigned to the 144th Fighter Wing, 194th Fighter Squadron, Fresno Air National Guard Base, California, takes off from Starokostiantyniv Air Base, Ukraine, Oct. 9 on the first day of flying operations for Clear Sky 2018. The exercise promotes regional stability and security, while strengthening partner capabilities and fostering trust. (U.S. Air National Guard photo by Tech. Sgt. Charles Vaughn)