In "A Coffin That Small", a boy who idolized firefighters ends up trapped in a laundry chute. They freed him, but he died at the hospital. At the end of the episode, as the funeral procession passes, the entire firehouse crew is standing outside with their trucks (a flag on the extended ladder), in full dress, saluting.
In "Leaders Lead", a little girl named Charlotte comes into Firehouse 51 with her parents on her 12th birthday to take photos with the trucks and firemen. Hermann decides to make her birthday a little more special by introducing her to Chief Boden. Upon meeting him, Charlotte asks him if he recognizes her. When he admits that he doesn't, she explains; exactly 12 years ago, she was left on the doorstep of Firehouse 51, and Boden was the fireman who found her that day. Boden, on the verge of tears, says that he had always wondered what had happened to her. Charlotte reveals that she was Happily Adopted, lives with her parents in Indiana, and came to the firehouse so she could personally thank him for saving her life. Boden, who had been having a very rough day, thanks her in return, saying that seeing how well she's grown up has made him very happy.
In "Two Families", Herrmann returns home after having to work at the station on Thanksgiving. He is quickly greeted by his family who inform that since he was working, they all decided to wait for him to return home. They then all settle down to have a "Day after Thanksgiving" meal.
In "Not Like This", McLeod's crusade to close Firehouse 51 and destroy Boden's career comes to a head... with the entire community marching to the firehouse wearing signs and chanting "SAVE FIFTY-ONE!" as McLeod is walking out after delivering final order to Boden, Casey, and Severide. The best part? It works. One of the Illinois state Senators basically orders that the fire company remains standing, AND effectively tells McLeod that her career in Chicago is over.
The whole community rallies because of one boy, Nathan, who Severide saved, and who started a signature drive. So, learning that his school closed their library to make more classrooms, everyone in Firehouse 51 chips in to build Nathan's school a new library.
The Season 2 finale, where Donna and Boden get married at Firehouse 51, with his family.
Donna: Oh, go. Boden: Are you sure? Donna: Husband and a hero? Best wedding story ever.
In "I Held Her Hand", after the team failed to rescue a woman trapped in her burning greystone and someone having tagged firehouse 51, Boden gets a visit from Donna and their son Terrance. Their sweet exchange, Terrance wanting to say hi and waving to his dad along with this sells it.
Wallace: Thank you. I needed this.
In "Spartacus," the Season 3 finale, tensions are high between the companies at 51, but during the warehouse fire that they respond to with other companies, including fireboats, when Severide and Dawson are trapped in the building, and Boden tells off the rest of the house that, as Battalion Chief, his orders are law and they are to stay there while he goes in alone to find his missing members, when the Chief of the 26th Battalion also on scene orders the building bombarded with water, Cruz pleads with him not to do it, fearing Boden, Severide, and Dawson will be cooked alive, even offering his badge, uniform, or his pension to not do it, Despite his pleas, the chief orders the line to Severide and Dawson powered down and the fireboats, snorkels, and ladder companies to open up with everything they got. The rest of 51, finally unified after their earlier tension, watch helplessly, fearing Boden, Severide, and Dawson are done for, only for Boden to emerge with Severide and Dawson right behind him, much to the relief of the rest of 51.
As a result, when they return to the firehouse, and find the Assistant/Deputy District Chief waiting to confront the member who threatened the 26th Battalion Chief at the fire scene, all of 51, having finally put their tension aside and united again as one firehouse, openly declare they all threatened the 26th Battalion Chief. The Assistant/Deputy District Chief gives up and leaves in annoyance at how whoever did it is being protected by the rest of the firehouse, while the firehouse celebrate their restored unity and a free drink at Molly's.
In "That Day," Boden returns to New York City and Ground Zero 15 years after 9/11, bringing Casey and Severide with him, since a friend he knew was retiring. He was very hesitant to go, as his inability to find survivors on 9/11 haunted him. But as he sees people paying respects at the reflecting pool and children playing nearby, he sees hope again.
Boden: Maybe hope has way of unlocking itself if you allow it to. All this time and the answers were right here. The future is right here.
Boden's speech at the end of "The People We Meet," after Dawson, Casey and Severide have gone through the emotional and physical wringer to help those who needed it.
Boden: Okay, I'm gonna say something now. Our family are not all here. I get that. And several of them are hurt. They may be suffering, but they are not weak. They are among the strongest men and women that I know. That is what it is to be one of us, to be a firefighter, to be able to change the fate of the people that we meet. That means when we turn up at a call, we don't see strangers. We see mothers and fathers, sons and daughters. It means that when we see others running out of that fire, we run in. The job we've taken on is to make a difference. What some in this house have done this week... sacrificing their own health, their own happiness for that of another, that is the true meaning of what we do.
Severide saving Ambulance 61's door, which has Shay's name, in "That Kind of Heat." Severide explains how Shay is still part of the "DNA of the firehouse.
In "Winterfest," a man who's played Santa for children's charities is injured by a collapsing tree, leaving him in a wheelchair for a few weeks. He's mostly upset as he won't be able to make a planned visit to a nearby school. The crew outfit a truck as a "sleigh" so the man and his wife can make the visit, handing out presents to the happy kids.
In Season 7, when Kelly's father Benjamin passes away from a stroke, the funeral service only includes family and the members of Station 51 in attendance. However, when they are carrying Benjamin's casket, draped in the Flag of Chicago, out of the church and to the hearse, Kelly and the rest are surprised to see several CFD engine and truck companies, decked out in their black-and-purple bunting of mourning, with their emergency lights blazing, arrive to the scene, their crews fully decked out in honor guard attire, and line the way to the hearse, with two of the truck companies raising their ladders and crossing them in salute, and once the members of 51 not serving as pallbearers join the rest of the honor guard to give the final salute, the Assistant Chief leading the procession has this to say:
Assistant Chief: Battalion Chief Benjamin Severide has returned to quarters. (The ceremonial bell is rung to signal the code 3-3-5) Assistant Chief: He is cleared from all his duties. He is gone, but never forgotten. May he rest in peace with his brothers and sisters above.
Then Boden gives the command to resume the march to the hearse as the CFD say goodbye to one of their own and one of the best members to ever serve as one of Chicago's Bravest.
