Spoiler
Part of me is thinking it was a bit of a cop-out. Part of me thinks I just didn't have enough investment in the show for it to resonate (teehee) with me as much as it perhaps could have. And yet another part thinks it was about the right ending for the show - though I wasn't quite expecting the nuclear bomb to actually go off, even if it was used for EMP purposes instead of death and destruction of a more immediately tangible nature.
I think the most contrived part of it was "let's shoot Twelve first, and then have Nine die of the mysterious causes from their childhood ubermensch program the same was Five". While potentially poetic, don't you shoot the guy who has the fucking detonator FIRST, regardless of how much you might be betting that it's not a legit threat and/or how little you care whether it goes off or not? And who the fuck orders you to shoot two people, with the potential for a nuke going off, non-simultaneously, while leaving not one, but TWO witnesses to this fact whose involvement is rather deep, just to cover up...what...the fact that Five was nuts and you went along with her little stunt at the airport? "Oh, yeah, there WAS a bomb on that plane which we planted to lure in the real Sphinx...but we were never going to let it go off near any people!" = problem mostly solved, and at least mitigated enough to fix things. Having TWO WITNESSES TO THE SHOOTING OF PEOPLE WHO HAD SURRENDERED TO POLICE CUSTODY is a much larger problem, especially when one of them is the police officer doing the arresting (disgraced/fired or not) and the other is a bloody high school student (never mind the likely plea of Stockholm Syndrome).
Sometimes, I love Japan's portrayal of America for the fact that it's slightly caricatured, slightly accurate, but always hilarious. In this case, I think it went waaaaaaaaaaaaay too far into "Idiot Ball" territory. I don't put it past the US government to perform a cover-up in this kind of situation, but by God, why would they leave two witnesses when they have every means and opportunity to get rid of all the possible loose ends with no ramifications, instead of deliberately creating a bigger problem than the one they were trying to cover up?!
That, and the lack of any suspense whatsoever to this episode really were the worst parts of it. The only real question in my mind was "Huh, I wonder if those F15s had time to get to the ground before the nuke-EMP hit them, 'coz they were at their altitude limit and had been flying for a good while before they had to give up." >.> And let's face it, it's not like they were going to do anything to stop the bomb - as much as shooting it would probably have disabled it, they were also faced with "oops, shit, now it's falling back to earth and is actually going to nuke Tokyo" or premature detonation. So, yeah.
Overall, just really let down by this show. I wish it had stuck to its early episode style and their promise of great and interesting things. The lack of a poetic final riddle also kind of bugged me. Shibazaki should have figured out they were going home based off a riddle, not just shown up because he intuited that's where they'd be.
I think the most contrived part of it was "let's shoot Twelve first, and then have Nine die of the mysterious causes from their childhood ubermensch program the same was Five". While potentially poetic, don't you shoot the guy who has the fucking detonator FIRST, regardless of how much you might be betting that it's not a legit threat and/or how little you care whether it goes off or not? And who the fuck orders you to shoot two people, with the potential for a nuke going off, non-simultaneously, while leaving not one, but TWO witnesses to this fact whose involvement is rather deep, just to cover up...what...the fact that Five was nuts and you went along with her little stunt at the airport? "Oh, yeah, there WAS a bomb on that plane which we planted to lure in the real Sphinx...but we were never going to let it go off near any people!" = problem mostly solved, and at least mitigated enough to fix things. Having TWO WITNESSES TO THE SHOOTING OF PEOPLE WHO HAD SURRENDERED TO POLICE CUSTODY is a much larger problem, especially when one of them is the police officer doing the arresting (disgraced/fired or not) and the other is a bloody high school student (never mind the likely plea of Stockholm Syndrome).
Sometimes, I love Japan's portrayal of America for the fact that it's slightly caricatured, slightly accurate, but always hilarious. In this case, I think it went waaaaaaaaaaaaay too far into "Idiot Ball" territory. I don't put it past the US government to perform a cover-up in this kind of situation, but by God, why would they leave two witnesses when they have every means and opportunity to get rid of all the possible loose ends with no ramifications, instead of deliberately creating a bigger problem than the one they were trying to cover up?!
That, and the lack of any suspense whatsoever to this episode really were the worst parts of it. The only real question in my mind was "Huh, I wonder if those F15s had time to get to the ground before the nuke-EMP hit them, 'coz they were at their altitude limit and had been flying for a good while before they had to give up." >.> And let's face it, it's not like they were going to do anything to stop the bomb - as much as shooting it would probably have disabled it, they were also faced with "oops, shit, now it's falling back to earth and is actually going to nuke Tokyo" or premature detonation. So, yeah.
Overall, just really let down by this show. I wish it had stuck to its early episode style and their promise of great and interesting things. The lack of a poetic final riddle also kind of bugged me. Shibazaki should have figured out they were going home based off a riddle, not just shown up because he intuited that's where they'd be.

So yeah. two and a half nuclear detonations out of five for this series, I think. Smack bang in "average" town.