North Vietnamese Attack South Vietnamese InstallationsNorth Vietnamese troops hit Allied installations throughout South Vietnam. In the most devastating attack, the ammunition depot at Qui Nhon was blown up. On April 27, the aviation fuel tanks at Da Nang air base were attacked by communist gunners, resulting in explosions and a fire that destroyed a large proportion of the fuel stored there. In the following three days, 54 South Vietnamese soldiers and civilians were reported killed, and 185 wounded. The United States reported seven dead and 60 wounded.