An Air Force service member died Saturday after falling while rappelling from the rafters of the Alamodome ahead of UTSA's game against Navy, according to Fox News.

The demonstration was part of UTSA's annual Salute to Armed Forces & Veterans pregame ceremony, in which four officers were scheduled to rappel onto the field 15 minutes before kickoff.

Task & Purpose reports the airman was halfway through the descent when he began to slide in an uncontrolled manner and hit the ground hard. Medical personnel treated him onsite before he was transported by stretcher to a local hospital, where he later died.

According to Task & Purpose, the airman was assigned to the 6th Combat Training Squadron, Detachment 2, a special warfare training unit based at Lackland Air Force Base about 12 miles from the Alamodome.

The outlet reports the detachment runs selection and initial training for airmen hoping to qualify as Tactical Air Control Party members, or TACPs — troops trained in ground combat and in directing strike aircraft over a battlefield.

Fox News notes their operational training regularly includes rapid rope insertions from heights of 100 feet or more, and Task & Purpose adds that the stadium's catwalks sit about 160 feet above the playing field.

Kickoff was delayed by 10 minutes following the fall, and UTSA head coach Jeff Traylor told Fox News the incident was 'heartbreaking' and 'tragic,' saying the immediate shift inside the stadium was unmistakable.

'You could tell the energy was just gone,' he said, adding, 'It really puts things in perspective.'

Fox News also quotes UTSA President Taylor Eighmy's statement extending 'deepest and most heartfelt sympathies' to the service member's family, squadron and everyone touched by the tragedy, and San Antonio Mayor Gina Ortiz Jones offering condolences on social media.

The Air Force has not identified the deceased, and both outlets confirm the incident is under military investigation. According to Task & Purpose, a Nellis Air Force Base spokesperson said, 'The incident is under investigation.

More information will be released as it becomes available.' Fox News reports the San Antonio Fire Department responded to the scene, while Task & Purpose says the department told it a person with a life-threatening injury was transported to a hospital.

What was intended as a day of 'camaraderie, tradition and celebration,' in President Eighmy's words, instead leaves a training unit and two fanbases awaiting answers.