Up to something? Sure. they just notice you're aware and not checked out like most buried in their smartphones. Yep, there's a fine line there too. Trying to remain SA and subtle can be challenging.I have noticed while practicing SA I am frequently given extra scrutiny by businesses and sometimes LEO. I guess looking around and paying attention also fits the behavior of some bad elements. I guess they think I am up to something. Other than the extra glances and monitoring I’ve never had any major problems. Worth the trade off in my opinion.
On a lighter note... and I know you don't do ANYTHING like this. Sorry, but your comments just reminded me of the scene in Galaxy Quest when Tim Allen; the ship captain, was doing tactical somersaults on the planet surface to get to cover...while Alan Rickman just walked casually beside him rolling his eyes!