The Story: "The Siren Song of the Satin Satan!" by Gerry Conway, Dick Dillin, and Frank McLaughlin. We open in a discotheque, where an exotic beauty known as the Satin Satan seems to be able to command men to do whatever she wants...
Meanwhile, there's a celebration happening at the JLA satellite, where the august group of heroes has just inducted a new member...Firestorm, the Nuclear Man!
It blasts Superman with Kryptonite eyes, and hits Batman with a lightning bolt-type ray, leaving the rest of the JLA to take it on!
After the initial exuberance, the JLA gets down to the nitty-gritty, teaching Firestorm all the details he must master to be a member of the team. Firestorm's younger side--teenager Ronnie Raymond--is bored to tears, but is snapped out of his fog by Black Canary. Green Arrow notices, and doesn't like that one bit.
Red Tornado notices Arrow's unhappiness, recalling his disappointment over Black Lightning turning the JLA down (in #173), and recalls the evolution of the team:
...nice page, but where's Hawkgirl? Who built Reddy's android brain, Texas Instruments?
Anyway, after the initial training session is over, the team beams down to Earth, going their own ways. Superman reminds Firestorm he is now part of a group of friends, and just to call if he needs them. After you've been inducted into the Justice League of America, what do you do for an encore?
Firestorm changes back into his two identities, Ronnie and Prof. Martin Stein. Ronny goes out with his friends to a dance club, where a mutual friend tells them what happened earlier, with the mysterious woman.
Ronnie leaves his friends, changes back to Firestorm, and investigates. Once inside another club people saw Satin go into, he finds her, but she is able to control his actions!
She plants one on Firestorm, and as he turns to stone(!), he has just enough energy left to hit his JLA signal device. To be continued!
Roll Call: Superman, Batman, Wonder Woman, Aquaman, Flash, Green Lantern, Green Arrow, Atom, Hawkman, Black Canary, Elongated Man, Red Tornado, Hawkgirl, Zatanna, and new member Firestorm!
Notable Moments: This is depending on your point of view of course, but to me Firestorm is the last new member of the "classic" JLA. There would be more members to come of course, but by then the JLA would be a very, very different book of characters.
Firestorm was a creation of Gerry Conway, and the character was a month or two away from having a back-up series in The Flash. (He would get his own book again in a year or two, The Fury of Firestorm, that would become one of DC's biggest sellers)
You could argue Conway was showing clear favoritism towards his own creation, putting this new hero in the League ahead of other, more established heroes. But I liked Firestorm on the team--his relative youth and experience was a nice counterpoint to the rest of the JLA, and having the same writer write Firestorm's solo book and JLA offered the opportunity to do character development within JLA, something Conway rarely got to do, but was obviously something he wanted to explore, and eventually got to do, big-time.