The Nanny pushed, and the back door opened. It moved out onto the porch, letting
the door close gently behind it. The night air was thin and cold. And full of
smells, all the strange, tingling smells of the night, when spring has begun to
change into summer, when the ground is still moist and the hot July sun has not
had a chance to kill all the little growing things.
The Nanny went down the steps, onto the cement path. Then it moved cautiously
onto the lawn, the wet blades of grass slapping its sides. After a time it
stopped, rising up on its back treads. Its front part jutted up into the air.
Its eye stalks stretched, rigid and taut, waving very slightly. Then it settled
back down and continued its motion forward.
It was just going around the peach tree, coming back toward the house, when the
noise came.
It stopped instantly, alert. Its side doors fell away and its grapples ran out
their full lengths, lithe and wary. On the other side of the board fence, beyond
the row of shasta daisies, something had stirred. The Nanny peered, clicking
filters rapidly. Only a few faint stars winked in the sky overhead. But it saw,
and that was enough.
On the other side of the fence a second Nanny was moving, making its way softly
through the flowers, coming toward the fence. It was trying to make as little
noise as possible. Both Nannies stopped, suddenly unmoving, regarding each
other—the green Nanny waiting in its own yard, the blue prowler that had been
coming toward the fence.
The blue prowler was a larger Nanny, built to manage two young boys. Its sides
were dented and warped from use, but its grapples were still strong and
powerful. In addition to the usual reinforced plates across its nose there was a
gouge of tough steel, a jutting jaw that was already sliding into position,
ready and able.
Mecho-Products, its manufacturer, had lavished attention on this jaw-
construction. It was their trademark, their unique feature. Their ads, their
brochures, stressed the massive frontal scoop mounted on all their models. And
there was an optional assist: a cutting edge, power-driven, that at extra cost
could easily be installed in their "Luxury-line" models.
This blue Nanny was so equipped.
Moving cautiously ahead, the blue Nanny reached the fence. It stopped and
carefully inspected the boards. They were thin and rotted, put up a long time
ago. It pushed its hard head against the wood. The fence gave, splintering and
ripping. At once the green Nanny rose on its back treads, its grapples leaping
out. A fierce joy filled it, a bursting excitement. The wild frenzy of battle.
The two closed, rolling silently on the ground, their grapples locked. Neither
made any noise, the blue Mecho-Products Nanny nor the smaller, lighter, pale-
green Service Industries, Inc., Nanny. On and on they fought, hugged tightly
together, the great jaw trying to push underneath, into the soft treads. And the
green Nanny trying to hook its metal point into the eyes that gleamed fitfully
against its side. The green Nanny had the disadvantage of being a medium-priced
model; it was outclassed and outweighed. But it fought grimly, furiously.
On and on they struggled, rolling in the wet soil. Without sound of any kind.
Performing the wrathful, ultimate task for which each had been designed.
"I can't imagine," Mary Fields murmured, shaking her head. "I just don't know."