กองทัพสหรัฐฯ ทดลองใช้เฮลิคอปเตอร์ควบคุมอัตโนมัติด้วยแอปป์

When it comes to autonomous vehicles, putting them in the relatively open skies may be easier than putting them on crowded roads. VOA's Kevin Enochs reports on how one branch of the military is investigating the use of autonomous helicopters.