I rolled to my feet and wondered if I had time to get back to the captain’s quarters. No — a black cloud was already roaring down the corridor toward me, like a dust devil whirling on the desert wind. I dropped to the deck again, squeezing my eyes shut, covering my mouth and nose with my left hand while holding my right far out from my body. That was the hand that had touched the venom sac; that was the hand that needed to be sanitized.

The cloud swept over me like a tornado. Each tiny black-dust particle was a microscopic robot, a hunter-killer built to destroy the equally small nanites that had been buzzing about the queen. Yes — the fuzz I’d felt had been little machines, the size of bacteria or maybe even viruses; and they’d been crowding around the venom sacs so thick I could actually detect them with my fingers.

Fuzzy air.

There was only one thing the nanites could be doing: sneaking their microscopic way through the membrane of the venom sac, scooping up minidrops of venom like bees sipping nectar, then crawling out again. That’s why the venom sacs had been deflating — weeny little robots were draining them in a miniscule bucket brigade.

And now Willow had sent a cloud of its own nanites to wipe out the intruders.

I could feel the defense nano scouring my skin — not just the hand that had touched the enemy, but everywhere: my face, my scalp, all under my clothes. The defenders would rip apart everything they found… even natural skin bacteria, because the people who built nano invaders often tried to disguise the tiny little monsters as ordinary microbes. When something is the same shape and size as an everyday bread mold, it’s easier to sneak past an antinano scan.

Every ship in the navy was constantly running defense scans. When crew members came aboard, they all got the once-over. So did cargo and supplies and equipment. The ship-soul also took down-to-the-atom audits of selected cubic centimeters of air, checking out every microscopic thingy to make sure it wasn’t a nanite in paramecium’s clothing. Even so, with all those precautions, a camouflaged swarm of invaders could usually avoid being noticed unless the computerized detectors knew exactly where to look. Most times you didn’t know you’d been boarded till the nanites actually attacked.