Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

Q: In Patriots Day, Dun Meng is video calling to his parents about his new vehicle. (This happens at the beginning of the movie). The terrorist hijack his vehicle later. The next victim, this cute couple appeared on screen even before the attacks. After the attacks, this couples lost their legs in the terrorist attacks. What is the significance of showing the victims even before the attacks?

A: What is the significance of showing victims even before the attacks?
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Q: What happened to Kochanski between season 8 and 10 of Red Dwarf? At the end of season 8, Rimmer had gone back to the "real" universe and the other 4 had gone to the mirror universe. After that, what happened? How were they all reunited and specifically, where did Kochanski go?

A: What happened to Kochanski between season 8 and 10 of Red Dwarf?
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Q: During the course of the Avengers, you see Mr Banner talk about his alter ego as just another entity inside of himself. Afraid, reluctant and very much un-willing to let him out, even if it means his escape from being captured by S.H.I.E.L.D. Citing Hulk's violence, lack of self-control, and raw power that would come of unleashing such a creature. However, during the argument on the plane as well as for the final battle, Banner is willing, and eventually does let the beast lose, seemingly without knowledge as to whether or not he can control him properly. Why does Banner choose to release the Hulk and where does he get the confidence he needs to be sure that he can point the indestructible beast towards the enemy, and not towards the Avengers?

A:
Why does Banner finally allow the Hulk to come out?
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