Sweat the small stuff. That’s the unofficial motto for this year’s edition of the military exercise Black Dart, a two-week test of tactics and technologies to combat hostile drones that begins Monday on the Point Mugu range at Naval Base Ventura County in California. The military categorizes Unmanned Aircraft Systems (UAS) by size and capability, from Group 5 drones that weigh more than 1,320 pounds and can fly above 18,000 feet like the Reaper, down to Group 1, mini- and micro-drones less than 20 pounds that fly lower than 1,200 feet. Previous Black Darts have covered threats to troops overseas...