I'm honestly surprised that it took this long. It's something that has been a worry in circles for a while. One of the bigger worries was using IEDs and drones

I'm honestly surprised that it took this long. It's something that has been a worry in circles for a while. One of the bigger worries was using IEDs and drones to deliver payloads to semi-secure locations, like data center power and cooling infrastructure. I know that exfiltration of information via drone was another worry, that came to light. I don't think we will see 3D printing of drones and terrorists collaborating over the Internet on CAD files, as these platforms are manufactured cheaply, en masse in China. I've always thought drone defense would be a massive industry. I don't think radio jamming will be a viable option to prevent an attack. Perhaps, GPS spoofing, but that has other side effects. You can't use projectiles safely, because of the potential for collateral damage. I think we should I'll begin microwave and laser based weaponry for this. One of the most intriguing weapons is an Electrolaser: https://en.wikipedia.org/wiki/Electrolaser https://en.wikipedia.org/wiki/Electrolaser. I believe that every US airport will need drone defense in ~10 years -- but alas, I've been saying that for the past few years.