Over the next several months the ship was upgraded with the most advanced weaponry available; among the new weapons systems installed were four MK 141 quad cell launchers for 16 RGM-84 Harpoon anti-ship missiles, eight Armored Box Launcher (ABL) mounts for 32 BGM-109 Tomahawk missiles, and a quartet of the United States Navy's Phalanx Close in Weapon System (CIWS) Gatling guns for defense against enemy anti-ship missiles and enemy aircraft. "New Jersey" also received eight RQ-2 Pioneer Unmanned Aerial Vehicles, which are remotely controlled drones that replaced the helicopters previously used to spot for her nine 16"/50 Mark 7 guns. Also included in her modernization were upgrades to radar and fire control systems for her guns and missiles, and improved electronic warfare capabilities.