Updated at 3:10 p.m.: Revised to include additional details.

A firefighter and a journalist from Dallas were among the five people killed when a helicopter crashed Sunday evening in New York's East River.

The private charter helicopter, a Eurocopter AS350, was carrying five passengers for a private photo shoot when it went down about 7 p.m., officials said.

Trevor Cadigan (left) and Brian McDaniel died in Sunday's helicopter crash. (via Instagram, Dallas Fire-Rescue)

Dallas Fire-Rescue confirmed Monday that Brian McDaniel, 26, died in the crash. He had worked for the department since May 2016.

He was assigned to Fire Station 36, in West Dallas near L.G. Pinkston High School.

He is survived by his father, mother and brother, a Dallas Fire-Rescue spokesman said.

"Hearts are heavy with grief as we not only try to come to grips with his loss departmentally; but to also be there in every way that we can for his family," spokesman Jason Evans said in a written statement.

Trevor Cadigan, a video journalist who was originally from Dallas, also died in the crash. He was a Southern Methodist University graduate who wrote for GuideLive for several years.

Cadigan was also a former WFAA-TV (Channel 8) intern and the son of production manager Jerry Cadigan, the station reported. He had recently moved to New York to start a career with Business Insider, the station reported.

McDaniel and Cadigan attended Bishop Lynch High School together, and McDaniel had been visiting Cadigan this weekend in New York, KXAS-TV (NBC5) reported.

McDaniel's brother, Jason, told the New York Daily News that his brother "loved his job, loved his friends and family and loved adventure." McDaniel played several sports at Bishop Lynch and was an Eagle Scout. He helped renovate a home in Dallas through the People Helping People program.

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His friend Cole Taylor Collins said McDaniel had told him how excited he was to see New York from the helicopter and had plans to see Broadway shows. He said McDaniel was a "hardcore" sports fan who loved the Texas Rangers and Dallas Cowboys as well as motorcycles, biking and the outdoors.

Collins and McDaniel had been friends since fifth grade.

Brian James McDaniel as an Eagle Scout (DMN Archive photo)

"He was one of the most loyal friends you could ever ask for," Collins said. "He was the type of guy that, even if you were in the wrong, he would be there for you and have your back. Also if you needed something and he was busy, and you actually needed him, he was the type of person who would drop everything in a heartbeat and come get you or help you out in any way he could."

Collins recalled how McDaniel pushed him to finish a hike up a steep mountainside during a trip to Colorado.

"I'm out of shape and wanted to quit 100,000 times and Brian wouldn't let me do that and just kept telling me how good it was going to be at the top and how I could do it," Collins said. "After two hours, we made it to the top and it was probably one of the most satisfactory things I've ever done.

"That's the kind of guy he is. He wasn't going to leave anyone behind and wasn't going to let anybody quit."

Collins said McDaniel also loved Dallas "more than anyone I've ever known in my life." Collins said his friend would give people grief if they didn't have a 214 area code.

He said McDaniel joined the department because "he kind of figured out that he loved Dallas so much and wanted to do something for it."

Andrew Vidales, who works security and coached McDaniel in cycling, went to McDaniel's Dallas Fire-Rescue academy graduation. He said McDaniel had some academic struggles, but always kept a positive attitude.

Vidales' son and McDaniel were close. Vidales said he also feels like Bishop Lynch lost a son.

"It's hard to lose people that we love, especially kids," Vidales said. "It's just hard when you know they have so much in front of them."

Cadigan got his start in journalism at Bishop Lynch doing a recurring offbeat school broadcast segment called "Typical Teen." His communications adviser, Michele Longoria, said Cadigan was "an amazing young man," who exuded charisma and was "larger than life."

Cadigan was a transfer student at SMU, where his professors said he fit in with his classmates right away. He "completed the group," said Pam Harris Hackett, who taught Cadigan's Broadcast Journalism I class.

"He would be in the journalism department all the time because he just wanted to learn," she said. "He'd light up the room."

He was a Jimmy John's fanatic, she said. He ordered the sandwiches so often — he was in the journalism department night and day, after all — that everyone around always knew to call him when the delivery drivers arrived.

Cadigan had high aspirations for his future, his professor Jake Batsell said. New storytelling technology excited him, and his start at Business Insider combined his passions for journalism and business.

"He was so passionate and optimistic about the power of new technology to tell people's stories," Batsell said. "He was living those aspirations and had so much more to give."

A friend and former classmate, Sierra Uselton, recalled Cadigan's willingness to help her learn to put together the early morning broadcast show at SMU. Without his help on her first day, Uselton said she might not have kept at it.

Trevor Cadigan (left) behind the camera at SMU. ((Michele Houston via Facebook))

"My first ever time doing that at 5 a.m., I had no idea what I was doing," she said. "He sat with me and showed me how to do everything. He didn't even care that it was 5 a.m. He was honestly one of the most helpful people in the journalism school."

Longoria, the Bishop Lynch teacher, said she kept up with Cadigan, and that he was learning Mandarin Chinese and had high aspirations.

"He was on track for greatness," she said. "I'm telling you, he was going to be, and probably already was, one of the students who you'd say one day, 'My God, that kid was in my classroom.'"

In the last Instagram Story he posted before the crash, Cadigan is beaming — smiling at the camera as the helicopter takes off at sunset, with McDaniel giving a thumbs-up behind him.

"That video is 100 percent how he was: always excited, always happy, always smiling," Uselton said. "It's comforting that in those final moments, he was doing something he loved. He was just excited about life."

Only the helicopter pilot survived the crash.

He was heard calling "Mayday, mayday, mayday" and reported engine failure as the helicopter went down. The helicopter flipped upside down in the water after it crashed, officials said.

The pilot was able to free himself from the aircraft and was rescued by a tugboat, officials said. New York police and fire department divers had to remove the remaining passengers from tight harnesses to get them out.

"It took a while for the divers to get these people out. They worked very quickly, as fast as they could," Fire Commissioner Daniel Nigro said. "It was a great tragedy that we had here."

The other people killed in the crash were Carla Vallejos Blanco, a tourist from Argentina, and helicopter employees Tristan Hill and Daniel Thompson, the Daily News reported.

The cause of the crash has not been determined, and the Federal Aviation Administration and the National Transportation Safety Board are investigating.

The Associated Press contributed to this report.