The Real Reason You Can't Bring Water Bottles Through Airport Security

Chip Somodevilla, Getty Images
Chip Somodevilla, Getty Images

Travelers already tired and weary from long spells sitting on planes and standing in gate lines can still muster up enough energy to grumble about restrictive airport security measures. Shoes and belts have to come off. Laptops are slid out from their cases. Unopened bottles of water are tossed in waste bins.

For a mode of transportation that can cause dehydration, not allowing water bottles through security is particularly grating. The directive was put in place by the Transportation Security Administration (TSA) in 2006. TSA agents and passengers are expected to follow the “3-1-1” rule for liquids. Those boarding planes can carry 3.4 ounces of liquid per container in a 1-quart bag, with one bag per passenger. While the rule has lent itself to criticism and ridicule, intelligence agencies believe they had—and continue to have—a very good reason for instituting it.

In the new Netflix series Terrorism Close Calls, former Central Intelligence Agency (CIA) officials go on record with details of a number of potentially catastrophic attempts to target civilians that were thwarted by law enforcement. Among those individuals contributing to the show is Steve Hersem, the former deputy director of the CIA’s Community HUMINT (Human Intelligence) Division. Hersem tells Mental Floss that the liquids ban has roots in two separate terrorist plots.

“The banning of a certain quantity of liquids from airline flights in 2006 was the direct result of the intelligence uncovered during Operation Overt,” Hersem says. Operation Overt was the term used to describe a collaborative effort to foil the plot of Abdulla Ahmed Ali, a British citizen who had known affiliations with radical Islamists and terrorists he connected with during frequent trips to Pakistan.

"Ali’s bags were secretly searched when he returned to the UK and a powdered orange soft drink along with a large number of batteries were found in his suitcase," Hersem says. "Based on his associations in Pakistan and the items in his luggage, a layered surveillance program was instituted by MI5, with assistance from the London Metropolitan Police. The surveillance, which included secret cameras and listening devices in Ali’s apartment, resulted in the discovery of a bomb-making laboratory and the fleshing out of a number of co-conspirators."

At one point during their surveillance, investigators witnessed Ali drilling a hole in a soft drink bottle so that it could be filled with an explosive liquid while still appearing to be unopened. If their plan had gone through, Hersem says that the result could have been an attack on seven planes flying out of London and heading for North America using, among other things, a hydrogen peroxide-based-liquid explosive. (Ali and several of his associates were convicted and sentenced to life imprisonment in 2009.)

Water bottles sit in a garbage bin at an airport
Tim Boyle, Getty Images

But that wasn’t the only justification law enforcement used for the liquids ban. "Al Qaeda had been fixated on targeting aviation as early as 1994 when Ramzi Yousef, the nephew of Khalid Sheikh Mohammed, the mastermind of the 9/11 attack, tested liquid explosives on an aircraft during the Bojinka Plot," Hersem says. "The Bojinka Plot targeted, in part, Philippine Airlines Flight 434 from Manila to Tokyo, which resulted in the death of a passenger and a large hole being created in the aircraft."

The subsequent liquids ban on flights may have stemmed directly from Operation Overt, but there was also a decade of intelligence to substantiate Al Qaeda’s ambitions—a threat that doesn’t seem to be letting up. "The ban is ongoing because intelligence continues to inform the United States Intelligence Community and other allied intelligence services that Al Qaeda, its affiliates, and the Islamic State of Iraq and al-Sham, or ISIS, continues to target aviation," Hersem says.

But why allow a little over 3 ounces? According to the TSA, limiting containers to what can fit inside a quart-size bag prevents what former TSA administrator Kip Hawley once called a “critical diameter” to blow anything up. The size of the container precludes enough of a potentially explosive liquid from being carried on board.

If you really want to get that bottled water past the security checkpoint, there is a workaround: Just freeze it. TSA allows for frozen liquids so long as they’re completely solid. (If it’s mushy or half-melted, you'll be asked to toss it.) Alternately, you can also just bring a completely empty bottle through and fill it up once you're done with the screening, which is the more environmentally conscious thing to do.

Convenient? Not really. But Hersem maintains it's necessary. "As long as there [are] ideologically driven terrorists who are interested in targeting civilian aviation, these types of bans have to be in place and are beneficial in the aggregate."

You Can Now Go Inside Chernobyl’s Reactor 4 Control Room

bionerd23, YouTube
bionerd23, YouTube

The eerie interior of Chernobyl’s Reactor 4 control room, the site of the devastating nuclear explosion in 1986, is now officially open to tourists—as long as they’re willing to don full hazmat suits before entering and undergo two radiology tests upon exiting.

Gizmodo reports that the structure, which emits 40,000 times more radiation than any natural environment, is encased in what's called the New Safe Confinement, a 32,000-ton structure that seals the space off from its surroundings. All things considered, it seems like a jolly jaunt to these ruins might be ill-advised—but radiology tests are par for the course when it comes to visiting the exclusion zone, and even tour guides have said that they don’t usually reach dangerous levels of radiation on an annual basis.

Though souvenir opportunists have made off with most of the plastic switches on the machinery, the control room still contains original diagrams and wiring; and, according to Ruptly, it’s also been covered with an adhesive substance that prevents dust from forming.

The newly public attraction is part of a concerted effort by the Ukrainian government to rebrand what has historically been considered an internationally shameful chapter of the country's past.

“We must give this territory of Chernobyl a new life,” Ukraine's president Volodymyr Zelensky said in July. “Chernobyl is a unique place on the planet where nature revives after a global man-made disaster, where there is a real 'ghost town.' We have to show this place to the world: scientists, ecologists, historians, tourists."

It’s also an attempt to capitalize upon the tourism boom born from HBO’s wildly successful miniseries Chernobyl, which prompted a 35 percent spike in travel to the exclusion zone earlier this year. Zelensky’s administration, in addition to declaring the zone an official tourist destination, has worked to renovate paths, establish safe entry points and guidelines for visitors, and abolish the photo ban.

Prefer to enjoy Chernobyl’s chilling atmosphere without all the radioactivity? Check out these creepy photos from the comfort of your own couch.

[h/t Gizmodo]

5 Cemetery Road Trips for the Ultimate Taphophile

Lucy Quintanilla/iStock
Lucy Quintanilla/iStock

Autumn is the best time of year for a road trip. The weather is cooling down, the leaves are turning, and fewer people are on the roads. With Halloween on the horizon, cemeteries are natural destinations. These five journeys—compiled by Loren Rhoads, author of the book 199 Cemeteries to See Before You Die—are a great way to explore America’s rich and varied history as recorded on its tombstones. Truly dedicated taphophiles (from the Greek for "tomb") can combine them into one itinerary covering 22 states and more than 10,000 miles. Tombstone tourists, rejoice.

1. Northeast

A stylized map of the United States showing a route map for a Northeast cemetery road trip
Lucy Quintanilla/iStock

A. Hope Cemetery
201 Maple Avenue, Barre, Vermont
44.2107° N, 72.4994° W

Barre’s Hope Cemetery is a jaw-dropping open-air sculpture garden, featuring locally quarried granite carved into everything from angels to sports cars to life-sized portraits. The cemetery is especially gorgeous when the leaves turn in autumn.

B. Mount Auburn Cemetery
580 Mount Auburn Street, Cambridge, Massachusetts
42.3752° N, 71.1450° W

Designed by Dr. Jacob Bigelow, the foremost botanist of his day, this breathtaking place may be the most important cemetery in America. Its opening in 1831 signaled a shift from austere churchyards to park-like cemeteries full of trees and flowers. One of the most striking grave monuments remembers Mary Baker Eddy, founder of Christian Science.

C. Touro Jewish Cemetery
Touro Street, Newport, Rhode Island
41.48793° N, 71.30936° W

Open only one day a year, the Touro Cemetery is the second-oldest Jewish cemetery in the U.S. Henry Wadsworth Longfellow wrote a beautiful poem about the place. Nearby Touro Synagogue offers a brochure to explain the significance of the cemetery to visitors who come to gaze through its gates.

D. Green-Wood Cemetery
500 25th Street, Brooklyn, New York
40.6590° N, 73.9956° W

Lovely Green-Wood Cemetery is the forefather of city parks in America. Full of famous names and one-of-a-kind monuments, the cemetery rewards repeat visits. Among those buried here are Jean-Michel Basquiat, FAO Schwarz, and conductor Leonard Bernstein.

E. Soldiers’ National Cemetery
Gettysburg National Military Park
1195 Baltimore Pike, Gettysburg, Pennsylvania
39.82177° N, 77.23256° W

A Gettysburg postcard from pre-1930
Author's collection

President Lincoln’s Gettysburg address announced the system of national cemeteries for casualties of federal battles. In Soldiers’ National Cemetery, granite stones marked with the tally of unknown soldiers from each state in the Union provide a sobering reminder of the costs of war.

F. Congressional Cemetery
1801 E. Street SE, Washington, D.C.
38.8811° N, 76.9780° W

Originally designed as a graveyard for congressmen who died in office, the Congressional Cemetery became the final resting place for a wide assortment of public servants. FBI Director J. Edgar Hoover, Civil War photographer Mathew Brady, and march king John Philip Sousa—as well as pioneers in the fights for Native American rights, women’s rights, and gay rights—are all buried here.

2. South

A stylized map of the United States showing a route map for a Southern cemetery road trip
Lucy Quintanilla/iStock

A. The Martin Luther King Jr. Center for Nonviolent Social Change
449 Auburn Avenue NE, Atlanta, Georgia
33.7563° N, 84.3734° W

Dr. Martin Luther King Jr. rests on the grounds of the Center for Nonviolent Social Change, founded in his name by his widow Coretta Scott King in 1968. After her death in 2006, Mrs. King joined him in a matching sarcophagus. The King Center is open 9 to 5, seven days a week, except for major holidays.

B. Bonaventure Cemetery
330 Bonaventure Road, Savannah, Georgia
32.0444° N, 81.0467° W

Oaks draped with Spanish moss surround museum-worthy statuary in Bonaventure Cemetery. When John Muir camped there in September 1867, he wrote that the cemetery was "so beautiful that almost any sensible person would choose to dwell here with the dead” [PDF]. More than a century later, the cemetery still makes all the lists of most beautiful graveyards.

C. Tolomato Cemetery
14 Cordova Street, Saint Augustine, Florida
29.8970° N, 81.3151° W

American citizens of Saint Augustine started using this acre of land as a cemetery in 1777, although the Spanish used it as a graveyard even earlier. As such, it may be the oldest European-founded cemetery in the U.S. Although Hurricane Irma did significant damage in September 2017, Tolomato Cemetery opens on the third Saturday of each month from 11 a.m. to 5 p.m. Admission is free, but donations are encouraged to help with preservation.

D. St. Louis Cemetery #1
425 Basin Street, New Orleans, Louisiana
29.9608° N, 90.0754° W

A vintage postcard of St. Louis No. 1
Author's collection

New Orleans’s tropical heat and humidity gave rise to the so-called oven tomb, which can reduce a corpse to bones in less than a year. In the back of each of these tombs stands a receptacle called a caveau, which contains the bones of all its occupants mixed together through the generations.

The most famous tomb in the oldest surviving cemetery in New Orleans may belong to Marie Laveau, the Voodoo Queen. The death date on the tomb is closer to her daughter Marie’s, but since the bones of all the tomb’s occupants lie jumbled together in its central caveau, it’s believed the original Marie rests there as well. After vandalism of the tomb spiraled out of control, the cemetery now opens only to tour groups. Luckily, there are many tours from which to choose.

3. West

A stylized map of the United States showing a route map for a Western cemetery road trip
Lucy Quintanilla/iStock

A. Texas State Cemetery
909 Navasota Street, Austin, Texas
30.15994° N, 97.43553° W

Conceived as a pantheon to the famous sons of Texas, the Texas State Cemetery is the final home of Gene Cernan, the last man to walk on the moon, as well as Congresswoman Barbara Jordan, who helped impeach Richard Nixon. Also buried here are Governor Ann Richards, Chris Kyle (author of American Sniper), and Stephen Austin himself, all of whom lie beneath remarkable statuary.

B. Apache Prisoners-of-War Cemetery
The East Ridge at Fort Sill, Lawton, Oklahoma
34.6960° N, 98.3710° W

After his capture by the U.S. Cavalry, Apache chief Geronimo remained a prisoner of war at Fort Sill until his death in 1909. His grave remained unmarked for many years, but early in World War II, the 501st Airborne took his name as their motto. With the permission of Geronimo’s descendants, paratroopers built the pyramid of stones that now marks Geronimo’s grave. Around him lie men proud to be remembered as his warriors.

C. Riverside Cemetery
5201 Brighton Boulevard, Denver, Colorado
39.4739° N, 104.5733° W

Dating to 1876, the year Colorado attained statehood, Riverside Cemetery embraced African American pioneers, the first native New Mexican elected to Congress, and the first doctor to theorize that cholera was contagious. The cemetery has struggled recently, but the Fairmount Heritage Foundation welcomes visitors by leading monthly tours.

D. Fort Yellowstone Army Cemetery
Grand Loop Road, Yellowstone National Park, Wyoming
44.9646° N, 110.7002° W

Before the formation of the National Park Service, the U.S. Army guarded Yellowstone from poachers and souvenir hunters. Their sober little cemetery underlines the dangers lurking in one of the most stunning places in America. As reported in Lee H. Whittlesey’s Death in Yellowstone, causes of death in this cemetery include drowning, avalanche, being struck by lightning, runaway horses, and grizzly bear attack.

E. Custer National Cemetery
Little Bighorn Battlefield National Monument, Crow Agency, Montana
45.5714° N, 107.4332° W

When gold was discovered in the Black Hills, the federal government demanded access across land it had set aside for the Lakota Sioux. As many as 10,000 Native Americans refused to renegotiate the treaty. In June 1876, Lt. Colonel George Armstrong Custer led the 7th Cavalry to attack, only to be wiped out by the Lakota, Cheyenne, and Arapaho. It took more than a century for the Native warriors to be commemorated here.

4. West Coast

A stylized map of the United States showing a route map for a West Coast cemetery road trip
Lucy Quintanilla/iStock

A. Lake View Cemetery
1554 15th Avenue E, Seattle, Washington
47.6341° N, 122.3153° W

High on a hill overlooking the city, Lake View's most famous residents are Bruce Lee and his son Brandon. Also buried here are Princess Angeline, daughter of Chief Sealth (who gave his name to Seattle), as well as madams, lumber barons, and politicians—a who’s who of Seattle’s historical figures.

B. Lone Fir Cemetery
SE 26th Avenue, Portland, Oregon
45.5173° N, 122.6446° W

Portland’s pioneer cemetery is glorious in springtime, when its rhododendrons bloom. Full of pioneers, prostitutes, shanghai captains, mayors, and governors, the cemetery also features some unusual modern grave monuments. Vandalism and the weather have been hard on Lone Fir, but its Friends group offers tours to raise money for repair.

C. Fort Ross State Historic Park
19005 Coast Highway 1, Jenner, California
38.5143° N, 123.2485° W

A vintage postcard from Fort Ross cemetery
Author's collection

In 1812, Russia invaded Northern California. Russian pioneers built a fort, married local women, and hunted sea otters along the coast. By 1839, they no longer needed to provision Russian settlements in Alaska, so the fort was abandoned, leaving behind a little graveyard. The California Historical Landmarks Committee took control of it in 1906.

D. Hollywood Forever
6000 Santa Monica Boulevard, Hollywood, California
34.0904° N, 118.3206° W

Once the swankest cemetery in Old Hollywood, Hollywood Forever is now the final resting place of Johnny and Dee Dee Ramone, Mel Blanc, Darren McGavin, Rozz Williams, John Huston, Cecil B. DeMille, and many more. The cemetery hosts concerts, movies, author events, and a magnificent Dia de los Muertos celebration.

E. Manzanar Cemetery
Manzanar National Historic Site, Inyo County, California
36.7255° N, 118.1626° W

The Manzanar War Relocation Center was the first American concentration camp to open during World War II. At its height, Manzanar imprisoned 10,000 men, women, and children of Japanese descent, most of whom were American citizens. Although the bulk of the camp was demolished, the cemetery’s Soul Consoling Tower continues to mark the graves of people who died while interned there.

F. Silver Terrace Cemeteries
381 Cemetery Road, Virginia City, Nevada
39.3165° N, 119.6451° W

A vintage postcard from the Silver Terrace cemetery in Virginia City
Author's collection

After the 1859 discovery of one of the richest lodes of gold in history, Virginia City became the largest town between Denver and San Francisco. Of course, this necessitated the largest cemetery district as well. The 22 adjacent graveyards making up Virginia City’s Silver Terrace Cemeteries are now part of one of the largest National Historic Landmark Districts in the country.

5. Midwest

A stylized map of the United States showing a route map for a Midwest cemetery road trip
Lucy Quintanilla/iStock

A. Lakewood Cemetery
3600 Hennepin Avenue, Minneapolis, Minnesota
44.5659° N, 93.1734° W

Modeled on Istanbul’s Hagia Sophia, Lakewood’s Mortuary Chapel is a spectacular example of Byzantine Revival architecture. Mosaic tiles, some as small as a fingernail, adorn its interior. At Lakewood, politicians with modernist monuments are buried beside names familiar from the grocery store: Charles Pillsbury and Franklin Mars, who founded the candy company that bears his name.

B. Oakland Cemetery
1000 Brown Street, Iowa City, Iowa
41.6697° N, 91.5222° W

Urban legends surround the Black Angel of Oakland Cemetery: if you kiss the statue, you’ll be struck dead; if a pregnant woman crosses its shadow, she will miscarry; if ever a virgin is kissed in front of the statue, it will resume its normal bronze color and the curse will be broken. Strangely enough, this is not the only black angel in Iowa—and the other has legends swirling around it as well. Daniel Chester French’s monument to spiritualist Ruth Ann Dodge stands in the Fairview Cemetery in Council Bluffs.

C. Graceland Cemetery
4001 North Clark Street, Chicago, Illinois
41.9548° N, 87.6619° W

Known as the Cemetery of the Architects, Chicago’s Graceland Cemetery holds the Carrie Eliza Getty mausoleum, considered one of the first examples of modern architecture. Graceland Cemetery also contains a wealth of magnificent statuary, including Lorado Taft’s Eternal Silence and Daniel Chester French’s Memory.

D. Elmwood Cemetery
1200 Elmwood Avenue, Detroit, Michigan
42.3466° N, 83.0179° W

A vintage postcard from Elmwood cemetery
Author's collection

Practically in the shadow of Detroit’s Renaissance Center, this dramatic garden cemetery stands on ground fought over during the French and Indian War. Elmwood Cemetery is the final resting place of Canadian Club whiskey founder Hiram Walker, guitarist Fred “Sonic” Smith of the MC5, and Detroit’s legendary mayor Coleman Young, who was a Tuskegee Airman.

Cemeteries are lenses, revealing what their local communities choose to celebrate alongside things that must not be forgotten. This list merely skims the surface—go see what you can discover.

This article was first published in 2017 and updated in 2019.

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