No assailants yet as far as I know but I was glad to have been watching out for a few times that could have turned into trouble. Ever have a car pull up behind you at a parking lot ATM and the 2 young males leave the engine idling?
The biggest returns from situational awareness so far have been while driving. It usually involves keeping more distance, noting other people's sudden stops and turns, poor signaling, and erratic speeds and poor lane position when turning. Some like to creep into other lanes. Once I was driving on the interstate and the U-Haul unit someone was towing came unhitched so the runaway unit drifted across several lanes before crashing into the median. I was polite and let it pass in front of me.