In Michigan, tiny JSX-2 microjets, each with a pilot squeezed inside, are zipping through the skies as part of a massive military exercise, simulating dangerous aerial threats like drones and cruise missiles. These small jets are helping the U.S. military prepare for the growing dangers these threats pose, including to the U.S. itself. The exercise highlights the urgent need for new and effective ways to defend against these evolving dangers, as global tensions rise and the risk of attacks beco...