At FRA bout 6 yrs ago on a Saturday morning I was waiting near the gate for the first Singapore flight to JFK. About a half hour before boarding, a young, at most 25 yrs old, police office asked what flight I was waiting for and then asked for my my boarding pass. After looking at it, he appeared to be embarrassed, actually blushing, and then asked me to follow him to an area behind portable screens. Once behind the screen they apologized, saying that it was the US TSA that asked them to do this. They emptied my carry on bag on a table and closely examined the contents. Then came THE FRISK. This was NOT A PAT DOWN. Pat downs don't have full cuppage. It reminded me of a Friends episode when Joey described how closely his tailor measured him for a new suit.
_Mych