RedactedNarrative: UNIT 1 WAS TRAVELING AT A HIGH RATE OF SPEED WHEN MAKING A TURN THROUGH THE RIVER BEND.  UNIT 1 ATTEMPTED TO PASS UNIT 2.  WHEN UNIT 1 MADE IT PAST UNIT 2, UNIT 1 MADE AN ABRUPT TURN IN FRONT OF UNIT 2.  UNIT 2 STRUCK UNIT 1 AND WENT OVER UNIT 1'S BOW.