Weapons guidance systems are being hardened against newer kinds of electromagnetic interference. Here’s What You Need to Remember: “Know the enemy” were words attributed to Sun Tzu as quoted by Air Force Chief of Staff Gen. Charles Brown in the context of better understanding the need for innovative concepts, adjustments and tactical modifications to successfully “accelerate” with threat adaptation and rapid modernization. Speaking to an audience at the 2021 Air Force Association symposium, Brown emphasized his well known “change or lose” guidance to his force, an idea grounded in the pointed recognition that Russia and China have been rapidly closing, or even eliminating, the longstanding superiority gap with the U.S. military in terms of technological sophistication, weapons development and sheer force size capacity.