CBR: TRINGENUITY 21: "Trinity" Commentary

[CBR News]

Learn the history behind each member of the villainous Troika in this week’s
“Trinity,” and discover that one of the villains isn’t who you thought it was. Also this
week, behold the secret of John Stewart’s strange transformations.


Full article here (http://comicbookresources.com/?page=article&id=18581).

[Zawisza]

My budget simply could not handle a weekly, but given that Firestorm is playing so heavily into this series, I'm rethinking that strategy and would like to get some idea of how far back I have to go.

When does Firestorm pop in?