A matter of terminology.
These are the special panels that, depending on their kind, perform different functions.
They are always located in big bases, rarely in the ones of the negligible strategic meaning.
To force such a barrier down, you gotta find its source, i.e.
generators, that are most usually to be found somewhere at the side, not necessarily nearby.
To destroy the generator, you oughta stand next to it and hold down theEkey for a specific duration.
The stopping of the auto-destruction mode is similar - also by holding down the appropriate key.
An unique matter is the equipment namedSCU, which can be encountered in three special bases, i.e.
at theAmp Station,Bio Laband theTech Plant.
In Bio Lab, you better destroy the generator, which is located somewhere in the complex.
So, as a matter of fact, this method is connected with seizing checkpoints.
a swift means of transport.
The yellow ones give you lift and the purple ones bring you back down.
The developers made provisions for such situations also.
The exploration of the sprawling bases is facilitated by specialtrampolines, i.e.
special round platforms with energy pulsating, in the form of clouds, above them.
They come in two versions, faction-bound and neutral.
The latter ones can be used indiscriminately, by all players - they glow white.
To travel between the key locations at the base, you could useteleports.
Therefore their faction colors - red, blue and purple.
Sometimes, however, such a barrier is missing.
They allow all the ground vehicles to replenish supplies.
If you drive up to the tower, on any vehicle, the regeneration process will start.
It is the longer the more ammo you have lost.

They come in three versions, i.e.
anti-personnel, anti-tank and anti-aircraft.
In some areas, there also are vastplatforms, at which there is a vehicle panel.
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