| cast |
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| Series Regulars | |||
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| Arnold Pinnock | Arnold Pinnock as Commander Will Royal | Deborah Kara Unger | Deborah Kara Unger as Major Ada Pedersen |
| Elias Koteas | Elias Koteas as Colonel Xavier Marks | Luke Mably | Luke Mably as Dr. Simon Hill |
| Michelle Borth | Michelle Borth as Dr. Rebecca Gordon | Terry Chen | Terry Chen as Captain Bobby Trang |
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| Recurring & Guests | |||
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| Huse Madhavji | Huse Madhavji as Lt. Col. Max Prakash | | |