41 reactions · 18 shares | "Public health saved your life today, and...

The United States operates the largest and most advanced defense shield on Earth—not a single dome or wall, but a vast, invisible network that spans the planet. Within seconds of a missile launch anywhere in the world, American early-warning satellites in space can detect the heat signature and alert command centers. #documentary #documentaryfilm #storytelling #jayveescars #geography | Denis Karori

375K views · 442 reactions | Everyone, in every sector, has a role to...

The Wearable Invisible Face Shield The wearable invisible face shield is a revolutionary air purification device that creates a protective air curtain in front of your face. It filters and kills 99.8% of airborne viruses and aerosols, offering invisible, contact-free protection. Ideal for industrial use, it’s a futuristic solution to modern health threats. Credits: @MichiganEngineering /YT #fblifestyle #technology #usa #faceshields #shield | Glass Media

A mega shield that hides whatever is right behind it | Space and Technology