RedactedNarrative: While unit 1 was attempting to dock in its slip, shifting the engines from reverse to forward, the fly wire controls became stuck in forward. 
  
  Unit 1 forward momentum caused it to collide with unit 2 pushing unit 2 into the finger pier, damaging it. Unit 1 was able to go to neutural and restart and reattempted to dock and the engines once again stuck in forward causing unit 1 to collide with unit 3.