 When the real 1 November 1964 arrived, the Viet Cong shelled airfields at Danang and Bien Hoa for the first time, destroying six Martin B-57 Canberras.The proposed introduction of American infantry on 26 February 1965 per Sigma II-64 really happened on 8 March 1965 when U.S. Marines landed at Danang.In both the simulation and the reality, the U.S. aim was defense of its air assets.