Was Barry's help really necessary to contain Fallout's meltdown? I thought all that was needed was for Cisco to breach him into a different Earth, which was exactly what he did.
No -- Harry said that dropping Fallout into a breach would trigger an explosion before he could pass through, so they couldn't send him to another Earth. All Vibe did was to open a breach in the sky overhead to allow the energy/radiation to pass through to the vacant Earth-15 once the Flash channeled it upward with the vacuum (and there is nothing about that sentence that makes physical sense, but whatever). Once Fallout's energy burst was spent, he was still there in Central City, and there was a line later about him being taken into custody, presumably in Iron Heights' meta wing with his powers damped.
Well, there's one thing about the physics that made sense. In a way, creating a vacuum around a nuclear bomb would minimize its blast effects, since most of the blast effects come from the sudden superheating and expansion of the surrounding air. But the radiation itself would still spread outward in all directions. There's no way to channel it strictly upward.
Also, I really hope Cisco's aim was good. Be a shame if that burst of radiation emerged in a populated alternate of Central City.
I admired Ralph Dibney for dissuading Joe from planting evidence into Marlize's house. He really has come a long way from being a shady private detective to a crimefighting team member.
Yeah, that was good. It took me a moment to remember that he'd been fired for planting evidence, so he was speaking from personal experience.
The sentencing scene was nicely done while Captain Singh was simultaneously giving an accolade to the Flash for having saved the city from certain nuclear destruction.
Yeah, good juxtaposition. Although the judge's, err, judgment of Barry's utter depravity seemed excessive.
Also, how did Singh know so much about the details of the fight? Did Vibe stay to talk to the authorities or something?