The United States used a clandestine, cutting-edge technology known as “Ghost Murmur” to locate and retrieve an American airman whose F-15 fighter jet was shot down in southern Iran, according to reporting attributed to the New York Post. The rescued service member, identified publicly only by the call sign “Dude 44 Bravo,” survived two days hidden in a remote mountain crevice while Iranian forces searched the area with a bounty reportedly placed on his capture.

The breakthrough in the search came when US intelligence deployed Ghost Murmur, a classified system capable of detecting the faint electromagnetic signature of a human heartbeat from long distances, even in vast, inhospitable terrain. President Donald Trump and CIA Director John Ratcliffe both alluded to the technology during a White House briefing, with Trump saying the CIA spotted the missing airman from “40 miles away.”

How Ghost Murmur works

Ghost Murmur merges quantum-based magnetometry with artificial intelligence to isolate the subtle magnetic signal generated by a beating heart and distinguish it from background interference. One source familiar with the system told the New York Post: “It’s like hearing a voice in a stadium, except the stadium is a thousand square miles of desert. In the right conditions, if your heart is beating, we will find you.”

The technology was reportedly developed by Skunk Works, Lockheed Martin’s ultra-secret advanced development arm, and had previously undergone testing aboard Black Hawk helicopters. The tool is expected to be adapted for future use on platforms such as the F-35.

According to sources cited in the report, Ghost Murmur relies on synthetic diamond-based quantum sensors capable of detecting biomagnetic activity at ranges previously thought impossible. The system is not without limitations; it performs best in sparse, low-interference settings and requires significant processing time.

Ideal conditions in the Iranian desert

The harsh, isolated desert environment where the F-15 crashed proved ideal for the system’s first known operational deployment. With minimal electromagnetic clutter, little human activity and strong nighttime thermal contrast between the cool ground and a living body, operators were able to cross-verify the readings.

A source quoted in the report said the name was intentional: “‘Murmur’ is a clinical term for a heart rhythm. ‘Ghost’ refers to finding someone who, for all practical purposes, has disappeared.”

Although the downed airman activated a standard Combat Survivor Evader Locator beacon, search-and-rescue teams still struggled to pinpoint his exact position. Ghost Murmur ultimately provided the critical cue that narrowed the search area and confirmed he was alive.

Two days in hiding

“Dude 44 Bravo,” a weapons systems officer, reportedly remained concealed in a crevice for two days after his aircraft was downed late last week. Iranian troops combed the rugged landscape, and US officials feared he could be captured alive.

A source said that a pivotal moment came when the airman briefly exposed himself while sending a beacon signal: “He had to come out [of the crevice] to send the beacon. It was less important the signal they sent and more important that he had to come out to send [it].”

Ratcliffe later confirmed that the CIA located the airman while he remained invisible to hostile forces but not to US intelligence capabilities.

A complex rescue operation

The mission to extract the pilot involved hundreds of US troops, two rescue aircraft that became stuck on the ground and additional planes sent in to support the operation. The stranded jets were ultimately destroyed to prevent their capture, but all American personnel were evacuated safely.

Trump described the mission as “like finding a needle in a haystack,” praising the CIA for its role. “The CIA was unbelievable,” he said. “The CIA was very responsible for finding this little speck.”

He also joked that the technology “might be classified,” adding that if CIA Director Ratcliffe discussed it further, “I’d have to put him in jail if he talks about it and I don’t want to put him in jail. He doesn’t deserve that.”

Details about Ghost Murmur remain highly classified, and officials reportedly avoided disclosing specifics about how the pilot was found. The existence of the system appears to highlight the CIA’s rapidly evolving intelligence-gathering capabilities, building on earlier disclosures of other advanced tools, including a device Trump previously described as “The Discombobulator,” used during an unrelated mission in Venezuela.