I won’t forget, when I was very first in the game, the first time I saw a bot and heard it’s “detection” sound, so cool!, it is echoing off the hill sides… holy cow, I stopped dead in my tracks! 
I would love to have that sound file, as now I want to use it for message notification on my phone, lol!
Does anyone know how to get this sound, or if there would be any copyright issues? 