Six coup attempts were made from 1986 to 1987 to overthrow Philippine President Corazon Aquino's government. Some coups supported the exiled former president Ferdinand Marcos while others were launched by military rebels. All of the coup attempts ended in failure. The most serious attempt was in December 1989 and resulted in 99 deaths, including 50 civilians, and 570 wounded. The United States supported the Aquino government by using airpower from aircraft carriers to deter the rebels.