Steven Garcia, 48, vanished without a trace on August 28, 2025. He was last seen leaving his Albuquerque, New Mexico home on foot, carrying only a handgun.

An anonymous source told the Daily Mail that Garcia was a government contractor working for the Kansas City National Security Campus (KCNSC), a major facility in Albuquerque that plays a key behind-the-scenes role in America's national defense.

Specifically, KCNSC manufactures more than 80 percent of all the non-nuclear components that go into building the military's nuclear weapons.

Garcia allegedly served as a property custodian at KCNSC's New Mexico facility, giving him a top security clearance and broad access to the entire site's nuclear secrets.  

The source described Garcia's work as 'a very high-level, overseeing position for all the assets. Tens, maybe hundreds of millions of dollars in equipment and assets, some of which are not classified, others would be classified.'

The government contractor's sudden disappearance marks the tenth person with ties to America's space or nuclear secrets who has died or mysteriously vanished in recent years, putting US national security experts on edge.

Moreover, four of these officials have vanished without a trace in almost the same manner as Garcia, and all had a connection to US nuclear secrets or rocket technology.

The Daily Mail has reached out to KCNSC and the US Department of Energy, which owns and oversees the facility, to confirm Garcia's work at the site and for comment on his disappearance.

According to police in Albuquerque, Garcia was last spotted on surveillance cameras walking out of his home on Cattail Court SW in a green camouflage shirt and shorts just after 9am local time.

He was also seen carrying a handgun, and authorities warned that Garcia 'may be a danger to himself.'

However, the anonymous source disputed any suggestions that the nuclear official may have been suicidal or was battling mental health issues.

'He was a very stable person,' they declared, adding that the possibility of Garcia being the target of foreign spies 'makes the most sense.'

Former FBI Assistant Director Chris Swecker previously told the Daily Mail: 'Our scientists have been targeted for a long time, especially in the rocket propulsion area, by hostile foreign intelligence services.'

Days after Garcia's disappearance, KCNSC reportedly launched a desperate search for the missing contractor, including going through his work computers, emails and files for any clues to his whereabouts, but nothing has been found.

'It's a little strange that these people just keep disappearing. I mean, he literally just walked off into the desert with a firearm and a bottle of water and that was it,' the source said, comparing it to the disappearance of retired Air Force General William Neil McCasland.