She hurried inside; they locked the big front doors behind her and put up all the force shields.

If the alien ship has any force shields, my sensors can't find them.

Our force shields are down, and I am unable to raise them again.

Their personal force shields stopped working for no apparent reason.

The force shields are down, and we don't have the power to raise them again.

She shut down all her force shields, feeding the extra power to the engine.

He shut down his force shields and smiled hopefully at Owen.

Same reason for the ship's force shields and heavy-duty security systems.

The four humans formed a square, with their force shields facing out.