Near the end of the episode, when Zeke exits the car, it is running, with exhaust shown from the back of the car. When the scene switches back to him getting off the ground, just seconds later, there is no exhaust coming from the car.
When the characters are on the ice towards the end of the episode, their breath isn't visible, in spite of the cold weather and the breath of the approaching search party being visible.
Michaela Stone goes to the police store room to get the drug to hand that over to the gang to get Cal released. At every point in conversation with the store keeper, she is at a loss and hesitating, and hesitates for signing and then the store keeper tells her that it is Jared's case so only he can authorize. She is a seasoned detective of the precinct and she should have been knowing all these rules and paper work and should not have attempted it at all as it is almost impossible to fool the police and system's paper work. She should have contacted the captain and anyone would be sympathetic enough to get Cal released safely so would have helped her.
When major had failed to get any useful results from the hacked research of Saanvi, she should have set her ego aside and contacted Saanvi again to seek her help and ideas. The cause of the government and the nation's safety is bigger than her own petty pride. It is odd that she herself couldn't do anything even after stealing Saanvi's work and is not letting Saanvi work further on it. Any senior official of the government worth his/ her salt would have offered Saanvi the moon and a few stars to make her work further on the project.
This is the character error of the power that is controlling the plane returnees. If the power wanted them to follow the calling, then, when Michaela Stone didn't let the drug cartel boss go (only to get killed in the forthcoming explosion), the power should have punished Michaela Stone, and not Ben, Grace, Olive by making the gang leader kidnap kid Cat. There is no logic why the family should have suffered when it was the mistake of Michaela Stone only, and Ben and others were always following each and every calling in right earnest.
All the while, Cat's role was very powerful and positive. But now, he became a helpless kid to get kidnapped so easily and keeps on dancing to the tune of the kidnappers not using his mercurial improvisations that he had been showing and using all along. He had helped so many person, and now he couldn't do anything to save himself.