I've been looking for a mod that is similar when putting a military unit to sleep and it wakes up when an enemy is nearby. In my case, it would be to wake up when there is activity nearby, not including from my units. This would be useful not just for military units, but also workers and others; e.g. to post excess workers at a spot that you want to be alerted if someone else comes by.

Any such mods; I could not find. Thanks in advance!