Let the FBI Handle It
I went to a disturbance at a backyard bbq once. As I was trying to figure out what was going on I had some old lady approach me and want to talk to me off to the side.
She told me she was an informant for the FBI and that if I left, she would be able to get some information on a matter the FBI was interested in. I rolled my eyes and thanked her and said I would be out of there as soon as I could make sure there was no violence going on.
Anyway I determined it was just verbal so I cleared the call and went back in service. About 15 to 30 minutes later dispatch radioed me to head back to the station. I got there and got a message to call some FBI Field office and ask for a certain agent.
I called and sure as rain this agent said he understood I spoke with his informant and wanted to know everything she told me.
Blew my mind. Story credit: Reddit / AllenGamble73