At the direction of US President Joe Biden, US Defense Secretary Lloyd Austin “authorised the deployment of a Terminal High-Altitude Area Defense (THAAD) battery and associated crew of US military personnel to Israel to help bolster Israel’s air defenses following Iran’s unprecedented attacks against Israel on April 13 and again on October 1”
Pentagon press secretary Pat Ryder said in a statement
US's advanced antimissile system THAAD and ground troops to Israel
Extracts: US to send advanced antimissile system and ground troops to Israel -- underscoring US's ‘ironclad commitment’ to Israel’s defence
The deployment of the advanced THAAD system, designed to shoot down ballistic missiles, is a significant step in US efforts to directly protect Israel by putting troops on the ground