Tag Archives: Popular Mechanics

A simple WWII era “hack proof” way to send messages between ships

U.S. NAVY PHOTO BY MASS COMMUNICATION SPECIALIST 1ST CLASS BRIAN P. CARACCI (via Popular Mechanics)

Many thanks to SWLing Post contributor, Marty, who writes:

Hi Thomas, I spotted this article in Popular Mechanics – To Prevent Cyber Snooping, The US Navy is Relying on WWII-Era Communications – and of course I thought it was about short wave. Boy, was I wrong!

(Source: Popular Mechanics)

The U.S. Navy, anticipating a future when a high-tech enemy could read its electronic communications, is going back to a hack-proof means of sending messages between ships: bean bags. Weighted bags with messages inside are passed among ships at sea by helicopters.

In a future conflict with a tech-savvy opponent, the U.S. military could discover even its most advanced, secure communications penetrated by the enemy. Secure digital messaging, voice communications, video conferencing, and even chats could be intercepted and decrypted for its intelligence value. This could give enemy forces an unimaginable advantage, seemingly predicting the moves and actions of the fleets at sea with uncanny accuracy.

Last week, a MH-60S Sea Hawk helicopter delivered a message from the commander of an amphibious squadron to the captain of the amphibious assault ship USS Boxer. The helicopter didn’t even land to deliver it, dropping it from a hovering position before flying away. The message was contained in a bean bag dropped on the Boxer’s flight deck.

The bean bag system, as Military.com explains it, is nearly eight decades old. The system dates back to April 1942, when a SBD Dauntless dive bomber assigned to the USS Enterprise was flying a scouting mission ahead of the USS Hornet. Hornet, about to launch sixteen B-25 Mitchell bombers on a raid against Japan, was traveling in extreme secrecy to preserve the element of surprise. The Dauntless pilot encountered a Japanese civilian ship and, fearing he had been spotted, dropped a message in a bean bag on the deck of Hornet. You can see some archival footage of the event here.[…]

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Image shows the extent of human radio broadcasts

Click to enlarge (Image credit: Adam Grossman of The Dark Sky Company)

(Source: Popular Mechanics)

Carl Sagan’s famous line from his 1990 speech about the Pale Blue Dot image—”Our planet is a lonely speck in the great enveloping cosmic dark”—is an understatement. We might consider our Milky Way, with its estimated 100 to 400 billion stars, a significant fixture in the cosmos. But there are some 100 billion galaxies just like it in the observable universe. It’s a daunting reality to consider when we’re thinking about the possibility of making contact with any intelligence that might be out there.

This map designed by Adam Grossman of The Dark Sky Company puts into perspective the enormity of these scales. The Milky Way stretches between 100,000 and 180,000 light-years across, depending on where you measure, which means a signal broadcast from one side of the galaxy would take 100,000 years or more to reach the other side. Now consider that our species started broadcasting radio signals into space only about a century ago. That’s represented by a small blue bubble measuring 200 light-years in diameter surrounding the position of the Earth. For any alien civilizations to have heard us, they must be within the bubble.[…]

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