Two men, who tragically lost their lives in a helicopter collision over the weekend in New Jersey, had both obtained their private pilot licenses more than ten years ago. The pair frequently enjoyed breakfast at a nearby café before embarking on flights from the local airfield.

On Monday, officials identified the deceased as Kenneth Kirsch, aged 65, and Michael Greenberg, aged 71, both residents of New Jersey. Witnesses reported to the police that their helicopters were flying in close proximity when they collided, crashing into a farm field situated near the airport in Hammonton, roughly 35 miles (56 kilometers) southeast of Philadelphia.

According to a statement by Hammonton Police Chief Kevin Friel, Kirsch from Carney’s Point succumbed to his injuries at a local hospital after being airlifted there. Greenberg, hailing from Sewell, was pronounced dead at the crash site.

The National Transportation Safety Board (NTSB) began investigating the scene on Monday, revealing that the crash debris spanned approximately 100 yards (91 meters). This debris included parts of both the main and tail rotors, as per a spokesperson. The helicopters are slated for removal on Tuesday for a more comprehensive examination elsewhere.

The NTSB anticipates releasing a preliminary report within the next 30 days.

Friel said rescuers responded to a report of an aviation crash at about 11:25 a.m. Sunday. Video from the scene shows a helicopter spinning rapidly to the ground. Police and fire crews subsequently extinguished flames that engulfed one of the helicopters.

The Federal Aviation Administration described the crash as a midair collision between an Enstrom F-28A helicopter and Enstrom 280C helicopter near Hammonton Municipal Airport. Only the pilots were on board.

Kirsch and Greenberg both received their private pilot licenses in 2014, FAA records show. They often stopped at the Apron Cafe next to the airport for breakfast before flying, said the restaurant’s owner, Sal Silipino.

Silipino said Kirsch and Greenberg ate at the cafe shortly before the crash. Patrons watched the helicopters take off from the airport and were stunned when the aircraft fell from the sky, he said.

“It was shocking. Still shaking to see that happen,” Silipino said. “They were just at our café having breakfast. They’re regulars. They come in every week or every other week. They fly in together. They seem to be very nice people. They were also very kind to the workers and staff and all.”

He said the helicopters’ flights appeared to begin without incident.

“I saw one go down and then I saw the other one go down and there was little bit of disbelief. It’s like, is that really happening?,” Silipino said.

FAA records show Kirsch was the registered owner of one of the helicopters, while the other aircraft was registered to M&M Charter LLC of Mountville, Pennsylvania. Contact information for M&M Charter could not be immediately found Monday.

Hammonton resident Dan Dameshek told NBC10 that he was leaving a gym when he heard a loud snap and saw two helicopters spinning out of control.

“Immediately, the first helicopter went from right side up to upside down and started rapidly spinning, falling out of the air,” Dameshek told the TV station. “And then it looked like the second helicopter was OK for a second, and then it sounded like another snap or something … and then that helicopter started rapidly spinning out of the air.”

Hammonton is a town of about 15,000 people located in Atlantic County in the southern part of New Jersey. The town has a history of agriculture and is located near the Pine Barrens, a forested wilderness area that covers more than 1 million acres (405,000 hectares).

Investigators will likely first look to review any communications between the two pilots and whether they were able to see each other, said Alan Diehl, a former crash investigator for the FAA and NTSB.

“Virtually all midair collisions are a failure to what they call ‘see and avoid,’” Diehl said. “Clearly they’ll be looking at the out-of-cockpit views of the two aircraft and seeing if one pilot was approaching from the blind side.”

Although it was mostly cloudy at the time of the crash, winds were light and visibility was good, according to the weather forecasting company AccuWeather.