Impossible to find Enemy Unit

[Deantwo]

Code:

Nothing can be demolished while an enemy unit is present on this world.

It is impossible to locate enemy units on your world, yet they prevent all demolition and construction.

We need a way to find enemy units on worlds we control.

For example police stations or some military buildings could highlight locations of enemy units on their world. This could be as simple as showing them on the world map, or have police helicopters circling over their heads with a spotlight pointed at them.
The highlighting could be delayed by 13 minutes or something, so an attacker can outrun it and try to keep ahead of defenders.
Same issue as: (Bug report) Enemy Troops don't Despawn