Some readers tell us that the M-61 20 mm Vulcan cannon fires about 6,000 rounds per minute not second—that’s a big difference.
The use of a military counter-drone laser on the southwest border this week—which prompted the Federal Aviation Administration to abruptly close the airspace over El Paso, Texas—will be a “case study” on the complex web of authorities needed to employ such weapons near civilian areas and the consequences of agencies…

