“I’ve been in and out of water all week,” Krause tells EW from set before rattling off his stunt badges of honor: “Yesterday, I was climbing around an upside-down world. We have an injured individual who was strapped to a roulette table in the casino, and then the ship turns over so he’s hanging upside down and Bobby has to find a way to get him back down to safety. I’ve got a little cut on my leg, and some bruises and stuff. Your body pays the price, but it’s fun.”

What’s less fun is shooting up to five episodes at once as the 9-1-1 team races the clock. Speaking to EW on the final day of February, just two weeks before premiere night, Minear jokes(?) that he hasn’t slept in two days: “I may have to call 9-1-1 before the day is over,” he says with a laugh before detailing how they are still finishing cruise ship scenes for the first three episodes while also preparing to film episode 6.

“We’re not just logistically planning a cruise ship disaster — with its many complicated rigs and sets — we’re logistically planning a TV show,” Minear explains. “When I have my two stars separated from the other cast, out on a cruise ship, you have to come up with stories that can service the other group of characters that can film on separate stages. And, hopefully, by the time it’s all put together, you won’t really feel that people are separated. It’s like planning the invasion of Normandy every week.”

Krause says it’s “been a dream” (wet)suiting up for battle with Bassett the past two months, but he’s also missed being a member of what he calls the “Firehouse Five.”

“We were all smiles when we finally got to work together the other day,” Krause says of reuniting with Bobby’s station 118 crew — Hen; Buck; Chimney (Kenneth Choi), who was recovering from a metal rod to the head during that season 1 plane crash; and Eddie (Ryan Guzman), who joined in season 2. We’ll have to wait a few episodes to see the Firehouse Five back together, but the team is keeping busy on land while their captain is busy being a bingo ball at sea.

On the clock, Hen is serving as interim captain, but at home, she and Karen (Tracie Thoms) are taking another stab at expanding their family of three. (“It takes us on a very interesting path in the first few episodes, so I’m excited to see how the fans respond to our newest edition,” says Hinds.)

Meanwhile, Eddie and Buck are focused on romance — and not just with their potential new love interests, hardware store flirtation Marisol (Edy Ganem) and death doula Natalia (Annelise Cepero). Eddie’s son Christopher (Gavin McHugh) is dating, and the single dad will turn to his best friend for an assist. “It really is a moment of desperation for Eddie where he is like, ‘Oh my God, this is a new avenue that I’m not prepared for…. Who knows women? Oh, Buck does,’” says Guzman.

“It’s been such a beautiful thing to explore Buck’s relationship with Christopher because we’ve seen him grow up,” adds Stark. “When [Christopher] joined the show, he was a kid, and now he’s not. He’s a teenager, and there are things that he’s going to be thinking about and feeling that are brand new to him. Buck is in a good position to be there for him in a way that maybe his own father can’t because he’s had a lot of relationship experience — some successful, some very unsuccessful.”

And which category does Buck’s relationship with Natalia fall in? “That is addressed pretty early on,” Stark teases. “He’s just looking for his happiness, and he’s willing to put himself out there again and be open to feeling things. He just wants to be happy.”

Luckily, there’s nothing up in the air about where Chimney stands with his finaceé Maddie (Jennifer Love Hewitt, who replaced Britton as the show’s main 9-1-1 dispatcher at the start of season 2).

“The wedding is happening!” Hewitt promises. But don’t expect it to take over Madney’s lives. “You will hear little bits about it, but honestly the emergencies are massive and exciting from the start — so being first responders keeps them busier than wedding planning,” she explains. “But we know the audience is waiting for these two to get hitched, and they won’t have to wait long.”

Before the ceremony, Choi teases some “pre-wedding celebrations” to come in episode 6: “And in 9-1-1 fashion, especially when it comes to Chimney, things may go awry. I think it’s going to be a lot of fun, and it may involve some of the 118 players…”

Whatever bachelor party shenanigans ensue, Minear is excited to plan a “different” kind of wedding as a capstone to this 10-episode season (shorter than usual due to last year’s writers’ and actors’ strikes).

“Kenny and Jennifer just have amazing chemistry together, made for a rom-com,” the showrunner says. “But they are both incredible dramatic actors as well. And finding an interesting way into their wedding has been a lot of fun because I had just come off [spinoff 9-1-1: Lone Star] where I had done the big wedding between TK and Carlos. I didn’t want to do that again. So I think I came up with something different, and I think it’s going to be incredible.”

Speaking of Lone Star, “overlap” between the 9-1-1 shows may be “baked in the cake,” but Minear confirms there won’t be a crossover with the Austin-based sister series this season. That said, former 118ers Tommy Kinard (Lou Ferrigno Jr.) and Ravi (Anirudh Pisharody) will pop up, as well as Buck and Maddie’s parents (Gregory Harrison and Dee Wallace). “And we are doing kind of a crossover on 9-1-1,” Minear teases. “But it’s not with Lone Star.” (When pressed for more details, the co-creator slyly muses, “Is it The Rookie?… Probably not, since I just said The Rookie.”)

So no Lone Star crossover, but we will get the series’ 100th episode — something that crept up on the 9-1-1 team.

It was the day of that aforementioned Firehouse Five reunion and “a couple hours in, we realized ‘Oh, this is the 100th episode!’” recalls Choi. “So all day we were super grateful and super thankful as to how far we’ve come. And I think it’s a testament to the fans of the show. They’ve kept us on the top of the chart.”

“It is beautiful to see how they resonate with the stories, the characters, and the emergencies,” adds Hinds, who officially celebrated the 100th with the cast and crew on set yesterday (with cake!). “But underneath it all, Tim has written characters who do have their own personal struggles,” Krause notes. “And the language of the show keeps growing, and the storytelling real estate keeps expanding. We do rom-com. We do thriller. We do action. We do horror. We do comedy. Until the scripts come in, we never know what we are going to do. It’s fun.”

It’s that diversity that keeps Bassett coming back season after season.

“As long as the stories keep coming and we keep delving into relationships and family matters — the extended family, the added family, divorce, kids, the empty nest, racial issues, marital issues, adoption, trying to have a child, LGBTQ issues…” she says, “there are so many life issues that we use as inspiration along with the headlines and stories that also inform us. So perhaps we can go on for quite a bit longer, because people surprise you.”

Maybe she has another 100 episodes in her — let’s just hope the water stays warm.