U.S. Army leaders say the deployment of a Terminal High Altitude Area Defense battery to Israel and roughly 100 soldiers to operate it will add to strains on the Army’s air defense forces.

The THAAD defense system is one of the US military’s most powerful anti-missile weapons, capable of intercepting ballistic missiles at ranges of 150 to 200 kilometers (93 to 124 miles) and with a near-perfect success rate in testing.

Washington deployed a THAAD battery, designed to intercept incoming ballistic missiles, to Israel around a year ago.