In between a detective and a sargent and less capable then the two combined. Most detargents end up working dispatch and drinking heavily or beating their wives in absence of alcohol or children to hit. Most criminals encounter a detargent at the police station will certianly be released due to lack of evidence or professionalism.
I got busted for killing a hooker but it was Detargent Steve who booked me so I got let go
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"