The Vietnam War is also referred to as the Second Indochina War and the Resistance War Against America. It is also known as the American War in Vietnam, the Vietnam Conflict, and the Vietnam Crisis. Some also refer to it as the Indochina Wars, particularly because it involved neighboring countries as well. Additionally, it is sometimes called the Cold War conflict because it happened during the Cold War era. Furthermore, some people refer to it as the Helicopter War because helicopters played a vital role in the tactics employed in the war. Lastly, some people simply call it the Nam, as an abbreviation for Vietnam.