Valentina Shevchenko,an Ultimate Fighting Championship mixed martial artist, spars with Army Sgt. Dale Addy, of the 128th Aviation Brigade, at Joint Base Langley-Eustis, Va., Dec. 9, 2016. Shevchenko not only trained with service members, but also visited Army and Air Force units throughout the week as part of a military appreciation visit. (U.S. Air Force photo/Staff Sgt. Nick Wilson)