The U.S. Air Force adds the A-Thirty-Seven jet bomber to its air power in Vietnam. At high or low speeds, it carries light to medium bombs, special armament, and a 7 mm "mini-gun". Two A37 Fighter-Bombers are shown flying in close formation. A bomb falls from underneath one of the aircraft. The bomb explodes in an open field-causing dirt to be flung into the air (slow motion footage). Another bomb falls into the field and explodes.