gazed, held my breath. A moving speck out there. A blob now.

And then I realized that it was not a large object, far away, but small, and already very close—only a few hundred feet off, dropping toward the top of our dome. A narrow, flat, ten-foot object, like a wingless volplane. There were no lights on it, but in the Earthlight I could see two crouching, helmeted figures riding it.

"Anita! Don't you remember!"

I was swept with dawning comprehension. Back in the Grantline camp Snap and I had discussed how to use the Planetara's gravity plates. We had gone to the wreck and secured them, had rigged this little volplane flyer....

The brigands on the rocks saw it now. A flash went up at it. One of the figures crouching on it opened a flexible fabric like a wing over its side. I saw another flash from below, harmlessly striking the insulated shield.

I gasped to Anita, "Light your helmet! It's from Grantline! Let them see us!"

I stood erect. The little flying platform went over us, fifty feet up, circling, dropping to the dome-top.

I waved my helmet-light. The exit-lock from below—up which we had come—was near us. The advancing brigands were already in it! I had forgotten to demolish the manuals. And I saw that the darkness down on the rocks was almost gone now, dissipating in the airless night. The brigands down there began firing up at us.