Guest Stars Seana Kofoed as Commander Carla Chase Gloria Reuben as Colonel Tannon McCarthy Tobias Jelinek as Paolo Castile Dylan Bruce as Major Thomas Mullen Cara Mitsuko as Dr. Lara Uchida Arianna Ortiz as Colonel Jocelyn Watkins Jake Matthews as Aaron Patel Co Starring Erin Ross as Millie Chapman Skyler Bible as Darren Graham Armand Patterson as Dr. Hampton