Gap generator

The gap generator is a device that can be used to hide a part of map or to hide units from enemy's sight.
It can refer to
* Gap generator (Red Alert 1), an Allied support structure in Red Alert.
* Mobile gap generator, an Allied support vehicle in Red Alert.
* Gap generator (Red Alert 2), an Allied support structure in Red Alert 2.
* Gap generator (Red Alert 3), the special ability for the Mirage tank in Red Alert 3.