This episode was the first with Ira Steven Behr as Executive Producer. One of the major changes he made to the series was in action sequences, specifically space battles, had to be shown on-screen more often and not just referred to, as TNG had repeatedly done. As the episode budget of DS9 shows could now accommodate more extensive battle sequences than TNG could do during its series run, starship fights became more commonplace in later seasons - especially during major Dominion War episodes. This particular episode marks the first signs of this change, as it features the biggest on-screen battle in Star Trek history up to that point (the Battle of the Omarion Nebula).

The Cardassians and Romulans possess an item which prevents changelings from altering their shape, a device which would have been extremely useful for the rest of the series. It is never mentioned again.

Featured in Star Trek: Deep Space Nine: What You Leave Behind (1999)