In Fallen Angels, what does VC stand for?

VC refers to Viet Cong.  The Viet Cong represented the enemy forces in the Vietnam War against the United States' and Southern Vietnamese troops.  The Viet Cong was also known as the People's Liberation Armed Forces, representing the Northern Vietnamese forces.  Primarily known as a guerrilla force, the Viet Cong possessed some distinct advantages in that they knew the land, had access to better intelligence reports, as well as felt that the primary reason for the war was a defense of their homeland.  While the Americans saw the war as a fight for Communism, the Viet Cong saw it as a battle to prevent an American form of imperialism, similar to how they battled off the French form of imperialism.