十博滚球体育app|孙子迷上无人机 巴菲特对此很感兴趣

Welcome to the drone age. Drones are the key to future warfare, security experts say. Drones will soon deliver your Amazon (AMZN) packages, if CEO Jeff Bezos has his way. And the latest versions of the unmanned aerial vehicles, or UAVs, are so user-friendly than an ordinary hobbyist can now buy one for $1,000 or so online and use it to film special moments, from adventure vacations to sporting events.青睐回到无人机时代。