Stardate: 51268.4. Voyager comes under attack from a Krenim Temporal Ship that alters the course of evolution by wiping out entire species from the timeline.
Quest roles:
Tarik Ergin(Lieutenant Ayala (uncredited)), Deborah Levin(Ensign Lang), Susan Henley(Ensign Brooks), John Loprieno(Obrist), Rick Fitts(Zahl), Kurtwood Smith(Annorax), Peter Marx(Krenim Commandant)