"Bram!" Miss Carroll cried. Tremaine snapped the cover in place, whirled to the chair, dragged it and its occupant away from the machine, then turned, seized the grips. On the wall the Niss moved in silence, readying the attack. The black-clad figure was visible, climbing to his place. The wall cleared. Tremaine stared across at the narrow room, the gray-clad Niss. They stood now, eyes on him. One pointed. Others erected leathery crests.
Stay out, you ugly devils, Tremaine thought. Go back, retreat, give up....
Now the blue glow built in a flickering arc across the Niss machine. The technicians stood, staring across the narrow gap, tiny red eyes glittering in the narrow alien faces. Tremaine squinted against the brilliant white light from the high-vaulted Niss Command Center. The last suggestion of the sloping surface of the limestone wall was gone. Tremaine felt a draft stir; dust whirled up, clouded the air. There was an odor of iodine.
Back, Tremaine thought. Stay back....
There was a restless stir among the waiting rank of Niss. Tremaine heard the dry shuffle of horny feet against the floor, the whine of the harmonic generator. His eyes burned. As a hot gust swept around him he choked and coughed.
NO! he thought, hurling negation like a weightless bomb. FAIL! RETREAT!
Now the Niss moved, readying a wheeled machine, rolling it into place. Tremaine coughed rackingly, fought to draw a breath, blinking back blindness. A deep thrumming started up; grit particles stung his cheek, the backs of his hands. The Niss worked rapidly, their throat gills visibly dilated now in the unaccustomed flood of oxygen....
Our oxygen, Tremaine thought. The looting has started already, and I've failed, and the people of Earth will choke and die....
From what seemed an immense distance, a roll of thunder trembled at the brink of audibility, swelling.