One of the nice things about Arlington is that if you tell them about something marginal, they don't care. I told them about a breach of peace that was dismissed when I was in college. They looked at me like "yeah, so?"
In CT, where the arrest occurred, any and all records associated with a dismissed case or a finding at trial of not-guilty MUST be removed from all court, arrest, and criminal files.
CHAPTER 961a* CRIMINAL RECORDS
Sec. 54-142a. (Formerly Sec. 54-90). Erasure of criminal records. (a) Whenever in any criminal case, on or after October 1, 1969, the accused, by a final judgment, is found not guilty of the charge or the charge is dismissed, all police and court records and records of any state's attorney pertaining to such charge shall be erased upon the expiration of the time to file a writ of error or take an appeal, if an appeal is not taken, or upon final determination of the appeal sustaining a finding of not guilty or a dismissal, if an appeal is taken. Nothing in this subsection shall require the erasure of any record pertaining to a charge for which the defendant was found not guilty by reason of mental disease or defect or guilty but not criminally responsible by reason of mental disease or defect.
So I was pretty confident there was nothing there. But since my town was a green town, i figured I had nothing to lose by divulging the info.
I did appear as a defendant, however the judge told me "This didn't happen. You can legally answer NO to any question about this arrest or trial."
I think "legal fiction" is the correct term.
Don