On January 24, 1968, Komer warned that "something is in the wind." Seven days later the Tet Offensive was launched by the Viet Cong and the North Vietnamese army. Tet weakened the Saigon government's presence in the countryside which had been aided by CORDS. The Regional and Popular Forces abandoned the countryside in some areas to defend cities and towns, suffering more than 6,500 casualties, including desertions. Tet was a psychological and strategic defeat for South Vietnam and its American ally, but by resulting in heavy Viet Cong casualties facilitated an early return to the countryside by South Vietnamese authorities and CORDS. Project Recovery distributed food and construction material to rural dwellers and involved CORDS in reconstruction efforts in the cities and towns. By May 1968, the rural population living in "relatively secure" hamlets had returned to pre-Tet levels of 67 percent.