Two days later, on April 30, the 82d Airborne was replaced in the city by Fox Troop from 2nd squadron of the / U.S. 3rd Armored Cavalry Regiment. The 3rd Cavalry was significantly smaller in number and chose not to occupy the same schoolhouse where the shooting had occurred two days earlier. On the same day soldiers shot three protesters in front of U.S. Forward Operating Base "Laurie," established in the former Ba'ath party headquarters, and next to the Mayor's office. At this point in time the 3rd Cavalry controlled all of Al Anbar province, and it became evident a larger force was needed. The now battalion-sized element of the 3rd Cavalry (2nd squadron) in Fallujah was replaced by the 2nd Brigade of the 3rd Infantry Division.