Thank you Randi - you have a sharp eye.
I am thinking it may be:
This part relating to . .
Something was erased or smudged out - it looks like the end of "Officer" and the start of another word, but I do not think we will ever know.
I have updated the transcription. (and fixed my auto-completion of Commanding Officer - as they routinely spell it out completely and I was already squinting at the next phrase)