How Does the President Message a Hidden Submarine? #MilitaryTech #Submarine #NuclearSubmarine #Navy

How Does the President Message a Hidden Submarine? Seawater blocks nearly all normal radio signals—phone, Wi-Fi, and standard military comms stop dead just meters below the surface. So how does the U.S. send an emergency launch order to a submarine hiding hundreds of feet deep without giving away its position? From massive very-low-frequency antennas and airborne transmitters to "the biscuit" authorization card, here is how underwater command signals actually work. Subscribe for more military tech and defense breakdowns! #MilitaryTech #Submarine #NuclearSubmarine #Navy #Engineering #TechFacts #HistoryBuff #DoomsdayPlane #Shorts