detecting scanner sweeps; it possible
it;s done in snipers death mission
any help appreciated

Player x commands scanner sweep.
It's not possible to detect the location of the sweep, just it's effect. For example an observer becoming visible, etc.

Scanner Sweeps, like Map Revealers, can never exist in a location, so while we can read them with command and kill/remove them with kill and remove all, we can't detect where they are or do any action that would enable us to.

Could you post sniper's death mission?

kalas, thank you

Only if you use 1337 h4x

That's h4x?

...guess I'll take your word for it. Looks more like a mod to me.