加州电动垂直起降飞机开发公司Joby涨幅扩大至7.8%；白宫表示，美国总统特朗普签署行政命令，以加强美国空域安全，应对潜在的无人机威胁。

Core Insights - Joby, a California-based electric vertical takeoff and landing (eVTOL) aircraft developer, saw its stock price increase by 7.8% following a significant announcement from the White House [1] Group 1: Company Overview - Joby is focused on developing electric vertical takeoff and landing aircraft, which are gaining attention in the aviation industry due to their potential for urban air mobility [1] Group 2: Industry Context - The White House announced that President Trump signed an executive order aimed at enhancing the security of U.S. airspace to address potential drone threats, which may positively impact the regulatory environment for companies like Joby [1]