The Joint Chiefs of Staff claimed to have located the enemy’s headquarters inside Cambodia — what the United States called the Central Office for South Vietnam, or COSVN. The chiefs envisioned it as a ‘Bamboo Pentagon,’ concealed beneath the jungle’s canopy. They thought that if you could blow up this central headquarters, you could cripple the enemy’s capacity to command and control attacks on US forces in South Vietnam. McCain said the United States should destroy it and win the damn war.