Somewhat dated info, but the USAR UC-35 (citation) det at Dobbins was always looking for people. Also had great hospitality once from the USMC E-2 unit there.
As far as C-12, a good friend, longtime C-12 IP, was just hired at Big D. Primarily a King Air guy, with a dash of Citation and PC-12. No prior airline time. He turned down a SW interview like 3 times.