Even with the protective fields functioning, the ship could not protect them entirely.

It is indeed a new form of protective field, Savant.

The blackness of the heavy protective fields remained to either side, behind, and below.

It seemed to glow fiercely in contrast with the darkness of the protective field.

Of course, protective fields kept the smoke from touching anything on the island.

They have a protective field that wards them against evil creatures and effects.

We hit what must have been some sort of protective field generated by the globe.

They have protective electric fields, like some kinds of fish on earth.

Why would Implementation leave that one line of cover across a bare, flat protective field?

Presumably, during the period of these changes the Earth had almost no protective magnetic field.