Some of the nation’s largest defense contractors are eying roles in President Donald Trump’s plan to build a more comprehensive missile defense system to protect the US.

Aerospace and defense manufacturer RTX Corp. is “fully prepared” to support President Donald Trump’s ambitions to build an orbital missile defense system to protect the U.S. Trump signed an executive order this week calling for the Pentagon to develop “an Iron Dome for America,

An executive order said the United States faced a “catastrophic threat” from advanced aerial weapons. But a defense system like Israel’s may not be feasible in the country, which is more than 400 times larger.

The Iron Dome is an Israeli air defense system that intercepts incoming short-range rockets and shells as part of the country's layers of advanced air defenses. Th