This weekend hundreds of families got the chance to reunite with the medical staff that helped save their kids’ lives.

The children, who were born sick or prematurely, are now healthy and doing wonderful.

The theme was "superheroes” for Halloween. Doctors and nurses at Cardon Children's Medical Center got to spend time with the children they treated in the hospital’s Neonatal Intensive Care Unit.

This reunion holds a lot of meaning, especially for families like the Rowley’s. Dallas and Sheridan’s one-and-a-half year old son Hayden spent 78 days in the NICU last summer.

“We were here every single day for hours upon hours,” said Dallas Rowley, Hayden’s dad.

“He did have a lot of health complications when he was born,” his mom Sheridan added. “The staff here is just amazing.”

Hayden was born 1 pound, 9 ounces at just 26 weeks.

“I mean we were leaving his life in the people here’s hand,” his dad said.

This reunion gave them a chance to reconnect and say thank you.

“It’s really emotional,” she said. “Just because they’re very special… we have our little miracle baby because of them.”

The medical staff became like a second family. They typically have between 50 to 55 babies in the NICU at any given time.

“I love all of them, just because we see the sickest of sick babies,” said Dr. Stephanie Castrillo, neonatologist. “So the earliest babies that we resuscitate are babies that are born around 23 weeks.”

They’re born with many different issues.

“Babies who have had gastroschisis, that’s when the intestines are on the outside of the body,” she said. “Those babies are doing great.”

“We have babies who have cardiac anomalies that need heart surgery,” said Castrillo.

Along with the fulfilling moments, she says there are sad times.

“When you have to give families bad news, which is one of the reasons why this type of occasion is so exciting and it’s so meaningful to us,” she said.

Now those tough times are in the past.

“Every family is special and you know holds a little piece of your heart,” said Castrillo.

“They did a great job,” said Rowley. “He’s a perfectly healthy little guy.”

“It’s nice to come back a year later and actually see them and say thank you,” he said.

There’s a lot of planning that goes into the reunion. In fact, there’s a whole committee involved. This is the 11th reunion they’ve held and they plan to continue it for years to come.