The military’s latest attempt to create cheap and effective counter-drone weapons looks like a shipping container. And for the first time, it took out a mid-sized aerial drone with a Joint Air-to-Ground Missile. The Army and weapons developer Lockheed Martin successfully took out the drone during recent testing at the Army’s Yuma Proving Ground in Arizona, the Army and Lockheed announced. They used Lockheed Martin’s GRIZZLY platform, a missile l…