Airman 1st Class Cayla Hunt Jo Koy has played to packed arenas ... The experience was deeply personal for Koy, who grew up on bases, with his father and stepfather both service members.

with his father and stepfather both service members. On his USO tour, Koy brought along his 21-year-old son, Joseph. “He’s only heard the stories,” Koy says. “He never got to fully take it in, and he ...