President Donald Trump announced his Golden Dome missile-defense shield for the U.S. on Tuesday. Defense stocks rallied early on Wednesday—none more so than L3Harris Technologies.There should be plenty of additional business for just about everyone.

President Donald J. Trump wants to build a new, state-of-the-art missile defense system to protect the United States, a plan that Rep. Elise M. Stefanik seems to hope will include a missile defense sy...

China is concerned by President Donald Trump's proposal for a new U.S. missile defense system, called the Golden Dome, which is designed to protect against adversarial attacks on America.