is a writer on defense and security issues and has been at Popular Mechanics since 2015. If it involves explosions or projectiles, he’s generally in favor of it. Kyle’s articles have appeared at The Daily Beast, U.S. Naval Institute News, The Diplomat, Foreign Policy, Combat Aircraft Monthly, VICE News, and others. Kyle is also a Contributing Editor for 19FortyFive. He lives in San Francisco. , The Lockheed Martin SR-72, commonly referred to as "Son of Blackbird," [1] is an American hypersonic concept intended for intelligence, surveillance, and reconnaissance (ISR)., The SR-72 Darkstar is no longer just a concept—it’s real, and the US Air Force has officially confirmed its existence. This hypersonic jet, which has captivated the imagination of aviation .