Each year, the United States records more than 3,000 suicides among military personnel and over 1,000 homicides. Many of these killings remain unresolved, and in cases where loved ones are said to have taken their own lives, the evidence often raises more questions than answers.
10. Paul Whipkey

During the early 1950s, Lieutenant Paul Whipkey held a prominent role in the United States Air Force at Fort Ord, California. He was among the first to observe atomic bomb tests. By 1957, his behavior became erratic. He experienced severe health issues, including tooth loss, frequent colds, sudden weight loss, and the appearance of black moles and warts across his body. On base, he was frequently seen conversing with two unidentified men in suits, after which he appeared visibly distressed and unlike his usual self.
On July 10, he informed his friends he was heading to Monterey, a nearby city. He left in civilian attire and never came back. The day he vanished, he had booked a hotel room 560 kilometers (350 miles) away. The following day, a man in military uniform was spotted driving Whipkey’s vehicle. That same day, the Army swiftly emptied his apartment. After a month with no trace of him, he was labeled a deserter. It took another eight months before the military initiated a search. His car was discovered in Death Valley with the keys still in the ignition and surrounded by cigarette butts, which was odd since he didn’t smoke. Even more suspicious, the Army destroyed all records related to Whipkey in 1977. Years later, without explanation, they reclassified his status from “deserter” to “killed in action.”
Numerous theories surround the disappearance of Paul Whipkey. Despite his strange behavior, his family and colleagues maintain that he was an exemplary soldier unlikely to desert. Some speculate he was recruited by the CIA and died during a covert operation, while others believe the military covered up his death from radiation poisoning.
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9. Chad Langford

Chad Langford served as a military police officer in Alabama in 1992. Just before turning 21, he had ended a relationship with his girlfriend but was dating other women and appeared content, even planning to reenlist. However, on March 2, he made a panicked call to his father, revealing he was involved in undercover operations dealing with guns and drugs, and feared for his life if his activities were discovered.
His father urged him to consult his undercover supervisor, but Langford explained he couldn’t reach him for another two weeks. During this period, his friends noticed significant changes in his behavior—he pierced one ear, adopted a “gangster” style of dress, and associated with dubious individuals. Three soldiers claimed they overheard him plotting to rob the Army trading post.
On March 12, 1992, while on duty, Langford radioed his team 30 minutes before his shift ended, stating he was assisting a stranded driver. Shortly after, he called for backup. When help arrived, they found his personal items—ID tag, armband, and radio—neatly lined up on the road. A short distance away, Langford lay with a fatal gunshot wound to his head. He was still alive but unable to speak and died shortly after. His death was officially classified as a suicide.
Langford’s family, however, rejects this conclusion. Beyond his future plans and the distressing phone call, there is substantial evidence suggesting foul play. The items found on the road bore unidentified fingerprints, none matching Langford’s. His cap was shoved into his mouth, cords were tied around his neck and ankles, his left hand was cuffed, and the words “March 3 Robert” were written on his hand. His handgun, found under his left shoulder, had fired two shots, but ballistics couldn’t confirm if they struck him. Shortly after the incident, two vehicles were stopped by military police, with one driver identifying himself as Robert. Langford’s family has called for a new investigation based on these inconsistencies.
8. Kirk Vanderbur

Kirk Vanderbur, a college student with aspirations of building a large family, funded his education using earnings from his Marine service. He began collecting Disney movies to pass on to his future children. In 1992, while stationed at Camp Lejeune in North Carolina and preparing for overseas deployment, he requested homemade cookies from his mother on Valentine’s Day and renewed his Playboy subscription. Two days later, he headed to the Flatwoods gun club for an afternoon of target practice.
Initially, it was thought Vanderbur was alone at the gun club. The manager, Laretta Wager, had errands to run, but Kirk assured her he would clean up and lock the premises afterward. When Laretta returned the next day, she found his car still parked, with the driver’s side door open and the keys in the ignition. Vanderbur had recently installed a car alarm, which he always kept active. Inside, she discovered his body with a gunshot wound between his eyes.
His death was initially declared a suicide, as his thumb was found near the trigger. However, paramedics discovered a second gunshot wound in his abdomen upon further examination. The official ruling was amended to state he had accidentally shot himself in the stomach while cleaning his gun, and the pain drove him to take his own life.
However, other evidence raises doubts. Gunshot residue on his forearm suggested he may have tried to shield himself. No fingerprints were found on the weapons or nearby items. A blood-splattered brown bag was discovered but never analyzed. An external investigation revealed his thumb couldn’t have reached the trigger as described, and two unidentified men were reportedly with him at the gun club, though they were never questioned.
Speculations about Vanderbur’s death vary from a flawed investigation to a contaminated crime scene to outright homicide. His family and several Marine comrades firmly believe he was murdered and are determined to uncover the truth behind his demise.
7. James E. Sabow

James Sabow, a highly decorated jet pilot with over 200 missions under his belt, was promoted to colonel in 1991. That same year, he discovered military planes were being dispatched to El Toro late at night, allegedly to transport weapons. When he raised concerns with his superiors, Commander Thomas Adams and Chief of Staff Joseph Underwood, they revealed the planes were moving weapons to South America in exchange for drugs.
Sabow threatened to report the operation and contacted retired General J.K. Davis, disclosing everything. Davis promptly alerted Washington, and a team was dispatched to San Diego to halt the drug trafficking. However, Davis also informed Sabow’s commander, Thomas Adams. Consequently, Adams removed Sabow and Joseph Underwood from their positions and charged them with “carrying extra baggage” on flights. The following day, Sabow received a peculiar phone call and was discovered dead in his garden an hour later, having been shot in the mouth.
His death was quickly declared a suicide, but his brother remained skeptical and launched his own inquiry. Investigators noted an unusual absence of blood at the scene where Sabow’s body was discovered. Independent autopsies later revealed he had suffered a blunt force trauma to the head, which fractured his skull and left him unconscious before he was shot. Many individuals assisting Sabow’s brother in uncovering the truth were intimidated and threatened by military personnel. In 2012, it was discovered that official autopsy photos of Sabow’s body had been altered to conceal bruises and markings indicating he had been assaulted before his death.
Sabow’s family and most investigators involved in his case firmly reject the suicide ruling. Forensic evidence and circumstantial motives strongly suggest foul play, yet the military has refused to explore alternative explanations.
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6. Yosef Alon

Yosef Alon, born in 1929 in Czechoslovakia, initially tried to continue his father’s jewelry business after the war. However, in 1947, he chose to join the Israeli Air Force as a pilot. Over two decades in Israel, he gained immense respect, and by the 1970s, he was nominated for a prestigious role at the Israeli Embassy in Washington. Alon’s experience as a fighter pilot, having completed nearly 75 missions during the War of Independence, earned him high regard in Washington, where he focused on armament projects like the F-4 Phantom.
On June 1, 1973, Alon and his wife, Devora, attended a dinner party at the Israeli Embassy. Returning home to Maryland in the early hours, Devora heard five gunshots as she entered the house. She spotted an unidentified man fleeing to a light-colored van, which quickly drove off. Outside, she found her husband lying in a pool of blood. Devora called the police while their daughters tended to Alon, but he passed away at the hospital within 30 minutes.
Despite extensive media attention and the personal involvement of then-Secretary of State Henry Kissinger, no suspects were ever identified in Alon’s murder. The case has sparked numerous conspiracy theories, including claims that Alon was involved with Israeli Intelligence or that he was killed for uncovering espionage activities by the Israeli Defense Minister. Others have even suggested romantic motives behind the crime.
5. William Donald Miller

William Miller, a US Marine Corps sergeant, was the oldest of six siblings. Raised in Wisconsin, he spent his childhood biking, horseback riding, and climbing trees. After finishing school, he followed his father’s path by enlisting in the Marines, eager to build his own career. By 1972, he was the father of three daughters—two from a prior marriage and a one-year-old with his new wife, Vickie.
While Miller was stationed in Okinawa, Vickie reconnected with her childhood sweetheart, George Hayden, who was also a Marine. Upon returning home, Miller discovered Hayden had parked his mobile home next to theirs. Enraged, Miller confronted Hayden, assaulting him and demanding he leave. When Hayden refused, the sheriff was called, but Vickie decided to leave with Hayden, taking their young daughter. Determined not to lose custody of another child, Miller gathered evidence against the pair, storing it in a box he entrusted to a neighbor. Hayden retaliated with violent threats.
On September 16, Miller got a call from Vickie, who claimed her car had broken down and asked him to meet her in a parking lot. Borrowing his neighbor’s car and carrying a pistol for protection, Miller left. That evening, a passerby noticed the borrowed car parked on the roadside alongside a maroon Chevrolet, similar to Hayden’s vehicle, and another unidentified car. Later, two motorists found Miller’s body with gunshot wounds to his right temple and back. His gun was left half-cocked in the car, which was still running with its headlights on. Two M-16 shell casings were discovered near his body.
To many, the case seemed straightforward. Hayden’s alibi was inconsistent—he claimed to be watching TV, while Vickie said he was out purchasing one since they didn’t own a television. However, it took 36 years for their arrest, and the case took another turn. Amid extensive media coverage of the trial, a former babysitter for the Millers came forward, revealing that her ex-boyfriend and former Marine, Rodger Gill, had confessed to witnessing the shooting. His presence at the scene remains unexplained. The following year, the convictions against Vickie and Hayden were overturned, and no further suspects have been apprehended.
4. Gareth Williams

In 2010, Gareth Williams, a mathematician employed by GCHQ, was temporarily assigned to MI6. Raised in Wales, he excelled academically, earning a first-class degree by 17 before completing his A-levels. He began a PhD in Manchester but left to join the government in London. Described by friends as highly introverted and reportedly asexual, Williams spent over a decade as a cipher and code specialist.
In early 2010, Williams expressed concerns about being followed. On August 23, colleagues requested a welfare check from MI6 after he failed to report to work for several days. Police discovered his decomposing body, naked and locked inside a North Face holdall in his bathtub. While coroners initially concluded Williams was likely murdered, authorities maintain his death resulted from a tragic accident during a sexual act.
Evidence strongly suggests foul play. Coroners determined it was impossible for Williams to lock himself in the bag, and the absence of fingerprints on the bathtub edges indicated he didn’t lower himself in. The entire apartment lacked identifiable fingerprints, hinting at a thorough cleaning. No drugs or alcohol were found in his system, but a mysterious white powder was scattered throughout the residence. The locks from his room were missing, along with his laptop and credit cards. Intriguingly, £6,000 was deposited into his account from an unknown source three days before his body was found and withdrawn the next day. Despite these anomalies, there were no signs of a struggle. The truth may remain elusive, but the case is undeniably unsettling.
3. LaVena Johnson

Hailing from Missouri, LaVena Johnson actively participated in various community initiatives, dreaming of launching a music and film venture with her siblings. She was sent to Iraq just two months before turning 20.
Tragically, Johnson passed away eight days prior to her 20th birthday, marking her as the first female soldier to die in Iraq under non-combat circumstances. Earlier, her boyfriend had broken up with her through an email. On her final night, she printed those emails, purchased snacks with a male companion, and then retreated to a tent alone. There, she burned the emails and the tent before using an M-16 to end her life. The coroner concluded it was suicide, leaving her family heartbroken and puzzled, especially since she had shown no signs of depression and had recently assured them of her return for Christmas.
Upon the return of Johnson's body, her father observed suspicious injuries: a broken nose hidden by plastic surgery, facial bruises, neck scratches, and damaged lips and teeth. A private investigation by her family revealed discrepancies in the official report, such as the absence of a bullet and injuries suggesting a smaller firearm. Additionally, her gloves were glued to her hands, revealing severe burns upon removal. Crime scene photos indicated she had been bitten, dragged into the tent, and an acidic substance was found on her, potentially to hide signs of assault.
Convinced of foul play, Johnson's family believes she was a victim of rape and murder. They are now urging the US government to reinvestigate her case.
2. David Cox

After graduating high school, David Cox enlisted in the Marines. During his time at Guantanamo Bay, he was involved in a code red hazing incident, which almost resulted in the death of a fellow Marine and later inspired the movie A Few Good Men. Cox and nine others faced attempted murder charges, but his defense team proved he was following implied orders, leading to his honorable discharge. Dissatisfied with the film's portrayal of events, Cox and some of the others sued the filmmakers.
In early 1994, Cox was hopeful about securing a permanent position at UPS, where he had been working temporarily. A month prior, he had confronted and reported a coworker for theft, leading to the coworker's termination. On January 4, Cox's girlfriend, Elaine, called their apartment but received no response. The answering machine revealed a message confirming Cox's permanent job offer. A follow-up call hours later also went unanswered, with another message from his boss indicating he hadn’t responded to UPS either.
Upon returning home, Elaine sensed something was amiss. The house doors were open, Cox’s car was still running, and his paycheck and handgun remained in the glove box. Cox was nowhere to be found, and his bank account showed no activity. Months later, when the ice thawed, his body was found on a riverbank 8 kilometers (5 miles) away. He had been shot once in the neck and three times in the back.
No one has ever been arrested for Cox’s murder. His mother thinks his outspoken criticism of the military led to his death, while his brother suspects it was due to the theft he exposed at UPS.
1. Ralph Sigler

Born in Czechoslovakia, Ralph Sigler moved to the US with his father at age eight. He enlisted in the Army in 1947 and married Ilse, a German woman, while stationed abroad. After his service, they returned to the US and started a family. In 1966, an FBI agent and two Army officers visited Sigler, informing him he had been chosen by a computer for a counterespionage role. His wife was made to sign a waiver barring her from legal action against the military if her husband died.
For several years, Sigler was often sent to Germany to deceive the SVR, Russia’s intelligence agency, with fabricated missile and weapon plans, as well as declassified “secrets.” He first met Russian officials in Zurich in 1968, quickly gaining their trust. His efforts reportedly helped uncover 14 SVR agents. Sigler received around $100,000 for his work, all of which he handed over to the Army.
During the mid-1970s, Sigler grew concerned that he was “in over his head” and that the Russians were growing wary, possibly forcing him to divulge additional information under duress. Around this time, the FBI secretly recruited him, though the arrangements were kept confidential. Simultaneously, classified information was being leaked to the Soviets. Sigler’s decision to retire from the Army alarmed intelligence officials, who subjected him to a polygraph test. His results showed extreme stress, prompting the Army to house him in a nearby motel. While there, a Soviet informant revealed Sigler’s double-agent status to the SVR. On April 13, 1976, Sigler phoned his wife, saying, “I’m dying. I never lied.” He was later discovered dead in his motel room, electrocuted by two lamps.
The Army declared his death a suicide, but many suspect Soviet agents were responsible. The erratic and distressed calls Sigler’s family received before his death suggest he may have been tortured before being killed. Despite these suspicions, the Army has declined to reopen the case. Sigler was posthumously honored with the Legion of Merit cross.
