“Did He Just Shoot From Under The Water?!” — The Nightmarish SBS Tactic That Made US Marines Panic
Three rounds fired from beneath the surface of the water struck a target standing on a pier at a distance of 14 m. The shooter’s head never broke the surface. His weapon had been submerged for 11 minutes. The entire engagement lasted less than 2 seconds from the moment the muzzle emerged to the moment it disappeared again.
When Staff Sergeant Marcus Daring of the United States Marine Corps Reconnaissance Battalion watched the footage during a joint training debrief in 2017, he asked the British liaison officer to replay it four times. He was not looking for camera tricks. He was trying to understand how the laws of physics had apparently ceased to apply.
Daring had spent nine years in marine recon. He had completed the amphibious reconnaissance coreman course, the combatant diver qualification course and two deployments to the Pacific theater where maritime interdiction was the primary mission. His unit trained with the latest equipment the American defense budget could provide.
The Mark 25 pistol his team carried cost $850 per unit and was specifically designed for underwater operations. The dive computers strapped to their wrists ran $3,200 each. Their closed circuit rebreathers represented a $14,000 investment per operator. In total, the average marine recon diver went into the water carrying approximately $23,000 worth of equipment.
The British operator in that footage was using a suppressed pistol that cost the Ministry of Defense $600 and a rebreather system that dated back to the 1980s. But the footage did not lie. The British Special Boat Service had developed something that American special operations doctrine considered impossible.
They were engaging targets from beneath the waterline with a level of accuracy that Daring’s own unit could not replicate from the surface in calm conditions. What he did not understand, what no one in that briefing room initially understood was that the equipment gap was not a disadvantage the British were overcoming. It was the entire point, but the true shock was still ahead.
Daring had arrived at the combined exercise in Scotland with a specific expectation. The SBS was a respected unit. Certainly their reputation in maritime operations stretched back to the Second World War when canoists in twoman kayaks had attached limpit mines to German shipping in the Bordeaux harbor raid of 1942. That history was acknowledged in every American special operations brief that mentioned British capabilities.
But history was history. Modern warfare required modern solutions. The Marine Corps had invested heavily in maritime technology precisely because they believed the future of naval special operations lay in superior equipment, superior sensors, and superior connectivity. A single Marine recon team could call upon satellite imagery, drone surveillance, and realtime data links that cost the Department of Defense approximately $400 million annually to maintain.
The SBS team that had arrived for the exercise brought rucksacks and a shipping container of equipment that looked to Daring’s assessment like it belonged in a museum. He recorded his initial impressions in a personal journal he kept throughout the exercise. The entry from the first day noted that the British divers appeared to be using equipment that American units had phased out 15 years earlier.
Their wets suits were not the latest low drag models. Their fins were standard issue. Their weapons showed signs of extensive field modification rather than factory precision. Daring wrote that he expected the exercise to demonstrate clearly why American investment in technology was the correct approach to modern maritime warfare.
That journal would later become a case study document at the Marine Corps warfighting laboratory. Not because he was right. The exercise scenario was straightforward. Both units would conduct a simulated infiltration of a harbor facility defended by Royal Navy personnel acting as opposing force. The target was a single individual, a role player representing a high value target who would be moving unpredictably within the facility.
The first team to positively identify the target and simulate an engagement would be declared successful. The second team would have to extract under simulated pursuit. It was a competition and Daring’s team intended to win. The American approach relied on what doctrine called technological overmatch. Before any diver entered the water, drone assets would map the harbor.
Acoustic sensors would track patrol boat movements. Encrypted communications would allow realtime coordination between the dive team and a command element monitoring from shore. The equipment cost for this single exercise exceeded $300,000. The planning phase alone took 11 hours. The SBS team leader, a warrant officer whose name Dearing never learned and who was identified only by his call sign, Finn, listened politely to the American brief. He asked one question.
He wanted to know the water temperature. When told it was 8° C, he nodded and said nothing else. His team’s planning phase lasted 40 minutes. They did not request drone support. They did not establish a command element. They simply checked their equipment, entered a small inflatable boat, and disappeared into the darkness of the Scottish coast 3 hours before the exercise officially began.
Daring assumed they had misunderstood the timeline. The first indication that something was wrong came at 0317. The opposing force reported a sensor anomaly near the western pier. A patrol boat was dispatched to investigate. It found nothing. At 0342, a second anomaly appeared on the eastern side of the harbor, the opposite end from the first contact.
Another patrol boat responded. Again, nothing. Daring watched these reports come in from the American command elements position and felt a growing unease. His own team was still 40 minutes from their planned insertion point, waiting for the drone feed to confirm patrol patterns. The British team had been in the water for over 3 hours.
Nobody knew where they were. At 0419, the exercise ended. The Royal Navy officer coordinating the opposing force received a radio transmission from the role player inside the facility. The high value target reported that he had been engaged by a diver who had apparently materialized from the harbor water directly beneath the pier where he was standing.
The diver had aimed a suppressed weapon at his chest from a distance described as close enough to touch. The role player had not seen the approach. He had not heard the approach. He had been looking at the water when it happened and had seen nothing until the moment the operator’s hand and weapon broke the surface.
The entire engagement lasted less than 3 seconds. Then the diver vanished back beneath the surface. The footage Dearing would watch hours later came from a camera the role player had been wearing for afteraction review. It showed a calm harbor, gentle ripples from wind. Then in the lower right corner of the frame, a shape materialized from the darkness of the water.
Not a swimmer surfacing, but a weapon emerging from the harbor as if pushed up by an invisible hand. The muzzle broke the surface, oriented directly at the camera, and the simulation rounds impacted the roleplayer’s chest before his brain could process what he was seeing. The weapon withdrew, the surface closed over it.
Total elapse time from first visual detection to complete disappearance 1.7 seconds. Daring’s team was still in their insertion craft when the exercise was called. They had not yet entered the water. Their technological overmatch had not had a chance to function because the SBS team had already won. The drone footage, when reviewed later, showed no sign of the British divers at any point during the exercise.
The acoustic sensors had detected nothing. The American investment of $300,000 in technological support had produced zero useful intelligence about an enemy swimming within the harbor for over 4 hours. In the debrief that followed, Daring asked the question that would define the next 72 hours of his professional development.
He wanted to know how it was physically possible to fire accurately from beneath the water’s surface. The ballistics alone should have made it impossible. Water is 800 times denser than air. A bullet leaving a submerged barrel loses most of its velocity within 2 m. The refraction of light through water makes aiming at surface targets an exercise in guesswork.
Everything he knew about underwater ballistics said that what he had witnessed could not work. The SBS warrant officer Finn answered with a question of his own. He asked Daring how much time his unit spent training in cold water at night without equipment support. Daring calculated with the exercise schedule and equipment maintenance requirements perhaps 40 hours per year. Finn nodded.
He said his team averaged 40 hours per month. Then he said something that Daring would later describe as the moment his understanding of special operations fundamentally changed. The warrant officer said that the shot itself was not the capability. The shot was merely the final 2 seconds of a 4-hour infiltration. The capability was everything that came before.
the ability to exist in the water so completely that the water became an extension of the operator rather than an obstacle to be overcome. American doctrine treated water as a medium to be crossed. SBS doctrine treated water as a home. What Daring did not yet know was that the technique he had witnessed represented only the surface layer of a training program that stretched back decades and demanded physical adaptation that American selection standards did not even attempt to measure.
The selection pipeline that produced the operators dearing had watched began not in water but in the breakon beacons where candidates marched until their feet bled and their minds begged for permission to quit. But that was merely the filter. The true shaping occurred in the jungles of Brunai and the waters surrounding Pool, where aspiring SBS operators learned to think of the ocean not as an environment, but as an extension of their own bodies.
The subsurface shooting capability that had just disrupted the entire defensive posture of the marine compound was not taught as a skill. It was absorbed through repetition measured in years rather than weeks. Candidates spent hours floating motionless in harbor waters, learning to control their breathing until their heart rates dropped to levels that would concern a cardiologist.
They practiced weapon manipulation while hypothermic, while exhausted, while operating on 4 hours of sleep accumulated over 3 days. The 92% attrition rate that American Special Operations Commands found alarming was, according to a former SBS instructor, quoted in a 2019 documentary, precisely the point.
The process was designed not to train men, but to reveal which men required no training at all, only refinement. Daring requested access to SBS training records through official channels. The request was denied without explanation. A British liaison officer speaking off the record during a social function 3 weeks later offered a single clarifying statement.
The record’s dearing sort did not exist in any format that could be shared because the training methodology was not documented in the manner American programs required. Knowledge transferred through demonstration, through failure, through physical memory accumulated over thousands of hours in water. There was no manual for what he had witnessed because the manual was the human body itself adapted through years of controlled stress until it operated differently than other human bodies.
The afteraction analysis that Daring compiled over the following 6 weeks forced him to confront statistical realities that his training had not prepared him to accept. The detection rate for SBS maritime infiltrations during joint exercises over the preceding 18 months stood at 11%. American SEAL teams operating in the same exercise parameters against the same defensive systems registered detection rates of 34%.
The difference could not be attributed to equipment because British kit was demonstrabably older and less sophisticated. It could not be attributed to intelligence preparation because both teams received identical briefing packages. The variable that remained when all other variables were controlled was the operators themselves.
Daring found a 2012 study conducted by the Royal Navy’s medical research division. The study measured physiological adaptation in SBS operators with more than 8 years of service. The findings indicated measurable differences in cold water tolerance, oxygen consumption efficiency, and cardiac response to submersion stress.
These were not personality traits or tactical preferences. They were biological adaptations, the result of selection pressure applied consistently over decades to identify and retain only those individuals whose bodies responded to water in specific ways. The compromise rate data proved even more difficult to process.
American maritime special operations units operating in contested literal environments between 2008 and 2014 experience compromise during infiltration in 19% of operations. British SBS units operating in comparable environments during the same period reported compromise rates of 4%. The gap was not explainable through luck or circumstance.
It represented a fundamental difference in capability that American doctrine had no framework to address. What troubled Dearing most was not the statistics themselves, but their implications for his own recommendations. He had been sent to evaluate potential integration of British techniques into American training pipelines.
The subsurface shooting capability alone would require modifications to weapon systems, ammunition types, and optics that carried a development cost estimated at $14 million. But the equipment changes were trivial compared to the personnel implications. The SBS operators he had observed were products of a selection system that rejected candidates.
American programs would have graduated. Replicating the capability meant fundamentally restructuring how the United States identified and developed maritime special operators. He wrote none of this in his official report. The document he submitted to Mars headquarters in January 2015 ran to 32 pages and contained detailed technical observations about equipment, tactics, and potential areas for cooperation.
It recommended expanded joint training opportunities and suggested several modifications to American infiltration protocols based on observed British practices. The report was wellreceived. Copies circulated to Naval Special Warfare Command and to the Joint Special Operations Command for review. Several of his technical recommendations were implemented within 18 months, but the report contained nothing about what he had actually learned.
The conversation that changed his understanding occurred 4 months after his return to the United States. A former SBS operator now working as a contractor for a defense consulting firm attended a conference on maritime security where Daring presented an unclassified version of his observations. After the session, the contractor approached him with a question that contained no question at all.
You saw the subsurface work, the man said. It was not an inquiry. It was a statement of recognized shared experience. Dearing nodded, “And you wrote a report about equipment modifications and joint training opportunities.” Dearing nodded again, the contractor’s expression did not change.
He had the weathered features and calm eyes that Dearing had learned to associate with men who had spent decades in water. smart, the contractor said, “Because the other report, the real one, would have ended your career.” Daring did not ask what he meant. He already knew. The real report would have stated that American maritime special operations doctrine was fundamentally misaligned with the capabilities required for certain mission sets.
It would have recommended not training modifications but selection modifications, changes to how candidates were identified, how they were screened, how their bodies were evaluated for adaptation potential. It would have acknowledged that some capabilities could not be purchased with money or mandated through policy.
They could only be grown through decades of institutional commitment to standards that American political culture would never accept. That report would have died in a filing cabinet, and the officer who wrote it would have been quietly reassigned to duties that did not involve evaluation of sensitive programs.
The exercise that had so disrupted marine defensive operations in October 2014 was never officially documented in American records. The SBS participation was classified at a level that removed it from standard afteraction reporting. Three years later, when Daring was promoted to a position that gave him access to broader intelligence products, he discovered that subsurface shooting had been employed operationally by British forces on at least seven occasions since 2001.
The operational details remained classified, but the existence of the capability was no longer theoretical. He thought sometimes about the panic he had witnessed on that beach. Young Marines, well-trained and well equipped, confronting something their preparation had not anticipated. The radio traffic he had monitored told a story of doctrine colliding with reality, of men reaching for procedures that did not exist because no one had imagined they would be necessary.
The SBS operators had known exactly what they were doing. The psychological impact was not incidental to the technique. It was integral. The shot from beneath the surface was designed not merely to neutralize a target, but to shatter the assumptions of everyone who witnessed it. Water was supposed to be a barrier.
Weapons were supposed to require air. Men were supposed to announce their presence before they could kill. Every assumption violated in a single trigger pull. Daring kept a photograph on his desk for the remainder of his career. It showed nothing classified, only a stretch of coastline at dawn taken during a joint exercise he had attended as an observer.
The water in the photograph was calm, reflecting the first light of morning. There was nothing visible on the surface or below it. That was the point. In 2022, 8 years after the exercise that had begun his education, Daring delivered a lecture at the Marine Corps University on coalition interoperability in maritime special operations.
The lecture was recorded for internal distribution. Near the end, a student asked a question about British SBS capabilities and how they compared to American SEAL teams. Daring paused for 11 seconds before answering. The recording captured him looking down at his notes, though he was not reading anything written there.
In 1943, he finally said, a British unit called the Special Boat Section launched attacks against German shipping using methods that defied every assumption about what was operationally possible. 80 years later, their successors are still doing the same thing. He closed his notebook. And 80 years later, we’re still trying to figure out how the lecture ended.
The recording showed students filing out of the auditorium, some pausing to speak with colleagues, others heading directly for the exits. Daring remained at the podium for several minutes, organizing materials he did not need to organize. What the recording did not capture was the document he had received that morning. A classified summary of a British operation conducted three weeks earlier in a location that remained redacted.
The summary contained a single technical detail that Daring recognized immediately. A target had been neutralized by precision fire from a position that satellite imagery confirmed was submerged at the time of the engagement. The water depth was recorded as 1.4 m. The operator’s name was not included in the summary.
His unit affiliation appeared only as a two-letter abbreviation that Daring did not need anyone to translate.
