Country Music performers Kellie Pickler, her husband Kyle Jacob, and Dave Baker perform for deployed service members at bases across Iraq, Dec. 25, 2016. Dunford, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across the globe. This year’s entertainers were Chef Robert Irvine, Wrestler Gail Kim, Musicians Kellie Pickler and Kyle Jacobs, and Roastmaster Jeff Ross. (DoD photo by Navy Petty Officer 2nd Class Dominique A. Pineiro/Released)

Country music singer Kellie Pickler sends a special holiday greetings to the Kandahar Military Police dispatch after the USO Holiday Tour show at Kandahar Airfield, Afghanistan on Dec. 25. (U.S. Army Photo by Staff Sgt. Rob Oson)

Chairman of the Joint Chiefs of Staff Gen. Martin E. Dempsey, country music artist Kellie Pickler, retired Chicago Bear middle linebacker Brian Urlacher, actress Dianna Agron, Gen Martin Dempsey, comedian Rob Riggle, actress Meghan Markle and Washington Nationals pitcher finish a USO show in Vicenza, Italy, Dec. 7, 2014. (DOD photo by D. Myles Cullen/Released)

Chairman of the Joint Chiefs of Staff Gen. Martin E. Dempsey, country music artist Kellie Pickler, retired Chicago Bear middle linebacker Brian Urlacher, actress Dianna Agron, Gen Martin Dempsey, comedian Rob Riggle, actress Meghan Markle and Washington Nationals pitcher finish a USO show in Vicenza, Italy, Dec. 7, 2014. (DOD photo by D. Myles Cullen/Released)

Musician Kellie Pickler performs for deployed service members in Vaernes, Norway Dec. 21, 2018. Dunford, along with USO entertainers, visited service members who are away from home during the holidays at various locations. This year’s entertainers include actors Milo Ventimiglia, Wilmer Valderrama, DJ J Dayz, Fittest Man on Earth Matt Fraser, 3-time Olympic Gold Medalist Shaun White, Country Music Singer Kellie Pickler, and comedian Jessiemae Peluso. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro)

Musician Kellie Pickler performs for deployed service members in Vaernes, Norway Dec. 21, 2018. Dunford, along with USO entertainers, visited service members who are away from home during the holidays at various locations. This year’s entertainers include actors Milo Ventimiglia, Wilmer Valderrama, DJ J Dayz, Fittest Man on Earth Matt Fraser, 3-time Olympic Gold Medalist Shaun White, Country Music Singer Kellie Pickler, and comedian Jessiemae Peluso. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, meets with deployed service members in Vaernes, Norway Dec. 21, 2018. Dunford, along with USO entertainers, visited service members who are away from home during the holidays at various locations. This year’s entertainers include actors Milo Ventimiglia, Wilmer Valderrama, DJ J Dayz, Fittest Man on Earth Matt Fraser, 3-time Olympic Gold Medalist Shaun White, Country Music Singer Kellie Pickler, and comedian Jessiemae Peluso. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro)

USO entertainers perform for deployed service members during the Chairman's USO Holiday Tour in Vaernes, Norway, Dec. 21, 2018. Dunford, along with USO entertainers, visited service members who are away from home during the holidays at various locations. This year’s entertainers include actors Milo Ventimiglia, Wilmer Valderrama, DJ J Dayz, Fittest Man on Earth Matt Fraser, 3-time Olympic Gold Medalist Shaun White, Country Music Singer Kellie Pickler, and comedian Jessiemae Peluso. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, meets with deployed service members at Naval Support Activity Bahrain, Dec. 22, 2018. Dunford, along with USO entertainers, visited service members who are away from home during the holidays at various locations. This year’s entertainers include actors Milo Ventimiglia, Wilmer Valderrama, DJ J Dayz, Fittest Man on Earth Matt Fraser, 3-time Olympic Gold Medalist Shaun White, Country Music Singer Kellie Pickler, and comedian Jessiemae Peluso. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, meets with deployed Sailors and Marines aboard the aircraft carrier USS John C. Stennis (CVN 74) in the Arabian Gulf, Dec. 23, 2018. Dunford, along with USO entertainers, visited service members who are away from home during the holidays at various locations. This year’s entertainers include actors Milo Ventimiglia, Wilmer Valderrama, DJ J Dayz, Fittest Man on Earth Matt Fraser, 3-time Olympic Gold Medalist Shaun White, Country Music Singer Kellie Pickler, and comedian Jessiemae Peluso. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro)