When you have a number of choices to select from, use a list or a chart. Draw a circle or a semi-circle with a radius of about 4 - 6. Mark the choices off as degrees on the circle. Hold the pendulum in the center and the swing of the pendulum will line-up with the appropriate marked off selection.
April 24, 1965 - President Johnson announces Americans in Vietnam are eligible for combat pay. May 3, 1965 - The first U.S. Army combat troops, 3500 men of the 173rd Airborne Brigade, arrive in Vietnam.
May 1961 - Vice President Lyndon B. Johnson visits President Diem in South Vietnam and hails the embattled leader as the 'Winston Churchill of Asia.' May 1961 - President Kennedy sends 400 American Green Beret 'Special Advisors' to South Vietnam to train South Vietnamese soldiers in methods of 'counter-insurgency' in the fight against Viet Cong guerrillas.