Guest Stars Stafford Douglas as Thatcher David Harbour as Reed Akley Jefferson White as Cole Dunlavey Travis Hammer as O'Byrne Daniel London as J. Robert Oppenheimer Catherine Haun as Dot David Midthunder as Aniceto Beth Bailey as Fay Rebekah Wiggins as Gladys Nathaniel Augustson as Bruce J.B. Tuttle as Ledbetter Christian Clemenson as Niels Bohr Philip Ettinger as Watts Kent Kirkpatrick as Army Doctor Dave Racki as Soldier #1