Part 2/9:
The Next Generation Responsive Strike (Next RS) program focuses on designing what the Air Force refers to as a "Y plane." Unlike experimental X-planes, Y planes act as pre-production prototypes that can be swiftly transitioned into operational models with minimal adjustments. The underlying hypothesis is that prior advancements in technology may lead to similarities with existing classified platforms, such as the SR-72, although DARPA refrained from confirming any link to such projects.