The master caution alarm pierced the cockpit with a sharp, rhythmic chime as the Boeing 737 MAX 8 was driven into a violent dive. At 34,000 feet over the desert borderlands near Jordan, the cockpit smelled of copper, sweat, and electrical heat. Captain Smit Machchhar was pinned against the center pedestal, the fabric of his white uniform shirt shredded and soaked in blood. To his right, his first officer—an Omani co-pilot who had sat beside him during routine pre-flight briefings in Dubai just two hours earlier—swung an improvised blade, striking Machchhar across his scalp, face, and forearms.