Anybody remember John destroying a city?

[HalFingJordan]

Doesn't ring a bell, I'm afraid.

[Star-Lantern]

I don't recall that line in Cosmic Odyssey.

I'm pretty sure John didn't destroy any cities prior to that.

[Space Cop]

Doesn't sound familiar. I wouldn't be surprised if it was unshown backstory.

[Andrew NDB]

Jeeze... you got me. I suspect it was something around Crisis on Infinite Earths when he was the "main" 2814 GL.

[Mister Ed]

I was rereading Cosmic Odyssey the other day (why did I do this? Who knows. My son has been reading my GL collection and just got to it, but that probably wasn't a good reason to subject myself to it), and came across something I'd forgotten.

There was a line, after Xanshi was destroyed, where John is thinking back on it and compares it to some incident where he was responsible for the destruction of a city. Anybody have ANY idea what that's about? I thought I had read pretty much every John Stewart appearance prior to that point, and that doesn't ring any bells. Did the writers just casually toss that in as some kind of half-hearted attempt to make his awful characterization in this mini sound as if it had some basis in something that came before?