In 1957, the United States conducted its first underground nuclear test, known as Rainier, at the Nevada Test Site. The device was detonated inside a carved tunnel deep within the rock, marking a major shift from open-air tests to underground experiments that produced far less radioactive fallout. The explosion created a powerful seismic wave that scientists used to study how nuclear blasts behave beneath the earth. via: NNSANevada yt | History In Pictures

🇺🇸 The Last 10 Presidents of the United States 🧭 The United States has witnessed major political, economic, and social transformations over the past five decades, and each president has left a distinct mark on the country’s history. From the Cold War era to the digital age, leadership in the White House has continuously shaped America’s direction at home and abroad. 🏛️ Beginning with Gerald Ford, who guided the nation through a period of political recovery, the presidency moved on to figures

286K views · 2.2K shares | "No major party nominee in the history of the United States of America...has known less or been less prepared to deal with our national security than Donald J. Trump. And what absolutely amazes me is that he doesn't seem to want to learn it." —Joe Biden on Donald Trump | Hillary Clinton | Facebook

5M views · 101K reactions | North Korea vs United States military power comparison 2022 00:00 Global Rank 00:10 Total Military personnel 00:20 Active Personnel 00:35 Defense Budget 00:40 Ground Forces Strength 01:20 Air Force Strength 02:45 Naval Power #north_korea #united_States #military | Defence Learning | Facebook