5月21日电，特朗普选择GUETLEIN将军领导“金穹”项目开发。

Group 1 - The core point of the article is that Trump has appointed General Guetlein to lead the "Iron Dome" project development [1] Group 2 - The appointment signifies a strategic move in defense project management [1] - The "Iron Dome" project is crucial for enhancing national security capabilities [1] - This leadership change may impact the project's timeline and execution [1]