The ambitious plan for a new U.S. missile-defense shield needs to navigate technology hurdles and budget questions.

I would love to be able to build a system that actually worked 100 percent of the time,” Sen. Mark Kelly said at POLITICO’s Security Summit, echoing doubt about President Trump’s ambitious Golden Dome initiative.

WASHINGTON (TNND) — President Donald Trump announced plans for a "Golden Dome" missile defense system, modeled after Israel's Iron Dome, to be operational by the end of his term in 2029. The ambitious project aims to protect the United States from enemy missiles with a high-tech shield.