Board Thread:Episodic and Issue Discussion/@comment-47881-20130203143937/@comment-5624498-20130203165558

I had previously discussed, just because somebody goes back in time to prevent a certain event from happening doesn't mean it's entirely successful.

Now it's pretty well explained why Impulse didn't fully prevent the apocalypse. He knew nothing about Green Beetle, and that's likely because Green Beetle never showed up on Earth in Impulse's timeline. When he came back in time, he only changed the time stream so that the Reach didn't kill Jaime and reboot the Scarab (so, yes, I believe the Blue Beetle that Impulse knew in the future wasn't Jaime). So Green Beetle was likely Plan B of the Reach and, unless additional intervention happens, the Reach apocalypse could still come true, only now, Jaime WILL be responsible in part.

With that being said, I'm not entirely familiar with the Blue Beetle-Reach storyline from the comics but I suspect there might be a development to at least get Jaime out of the Reach's control, given that, as I understand it, Jaime ultimately learns how to control his relationship with the Scarab and not succumb to the Reach.