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Field Systems
Half an hour later； when they got back to Thorne's Office； Kelly stared； stunned。 Most of the workers were gone； and the shed had been cleaned up。 The two trailers and the Explorer stood side by side； freshly painted dark green； and ready to go。
They're finished！〃
〃I told you they would be；〃 Thorne said。 He turned to his chief foreman； Eddie Carr； a stocky young man in his twenties。 〃Eddie； where are we？〃
〃Just wrapping up； Doc；〃 Eddie said。 〃Paint's still wet in a few places； but it should be dry by morning。〃
〃We can't wait until morning。 We're moving out now。〃
〃We are？〃
Arby and Kelly exchanged glances。 This was news to them； too。
Thorne said； 〃I'll need you to drive one of these； Eddie。 We've got to be at the airport by midnight。〃
〃But I thought we were field testing。
〃No time for that。 We're going right to the location。〃 The front door buzzed。 〃That'll be Malcolm； probably。 He pushed the button to unlock the door。
〃You're not going to field test？〃 Eddie said； with a worried look。 〃I think you better shake them down； Doc。 We made some pretty plex modifications here； and … 〃
〃There's no time；〃 Malcolm said； ing in。 〃We have to go right away。〃 He turned to Thorne。 〃I'm very worried about him。〃
〃Eddie！〃 Thorne said。 〃Did the exit papers e in？〃
〃Oh sure； we've had them for the last two weeks；〃
〃Well； get them； and call Jenkins； tell him to meet us at the airport； and do the details for us。 I want to be off the ground in four hours。〃
〃Jeez； Doc … 〃
〃Just do it。〃
Kelly said； 〃You're going to Costa Rica？〃
〃That's right。 We've got to get Levine。 If it's not too late。〃
〃We're ing with you；〃 Kelly said。
〃Right；〃 Arby said。 〃We are。〃
〃Absolutely not；〃 Thorne said。 〃It's out of the question。〃
〃But we earned it！〃
〃Dr。 Levine talked to our parents！〃
〃We already have permission！〃
〃You have permission；〃 Thorne said severely； 〃to go on a field test in the woods a hundred miles from here。 But we're not doing that。 We're going someplace that might be very dangerous； and you're not ing with us； and that's final。〃
〃But … 〃
〃Kids；〃 Thorne said。 〃Don't piss me off。 I'm going to go make a phone call。 You get your stuff together。 You're going home。〃
And he turned and walked away。
〃Gee；〃 Kelly said。
Arby stuck his tongue out at the departing Thorne and muttered； 〃What an asshole。〃
〃Get with the program； Arby；〃 Thorne said； not looking back。 〃You two guys are going home。 Period。〃
He went into his office and slammed the door。
Arby stuck his hands in his pockets。 〃They couldn't have figured it out without our help。〃
〃I know； Arb；〃 she said。 〃But we can't make him take us。〃
They turned to Malcolm。 〃Dr。 Malcolm； can you please … 〃
〃Sorry；〃 Malcolm said。 〃I can't。〃
〃But … 〃
〃The answer is no； kids。 It's just too dangerous。〃
Dejected； they drifted over to the vehicles； gleaming beneath the ceiling lights。 The Explorer with the black photovoltaic panels on the roof and hood； the inside crammed with glowing electronic equipment。 Just looking at the Explorer gave them a sense of adventure … an adventure they would not be part of。
Arby peered into the larger trailer； cupping his eyes over the window。 〃Wow； look at this！〃
〃I'm going in；〃 Kelly said； and she opened the door。 She was momentarily surprised at how solid and heavy it was。 Then she climbed up the steps into the trailer。
Inside； the trailer was fitted out with gray upholstery and much more electronic equipment。 It was divided into sections； for different laboratory functions。 The main area was a biological lab； with specimen trays； dissecting pans； and microscopes that connected to video monitors。 The lab also included biochemistry equipment； spectrometers； and a series of automated sample…analyzers。 Next to it there was an extensive puter section； a bank of processors； and a munications section。 All the lab equipment was miniaturized； and built into small tables that slid into the walls； and then bolted down。
〃This is cool；〃 Arby said。
Kelly didn't answer。 She was looking closely at the lab。 Dr。 Levine had designed this trailer； apparently with a very specific purpose。 There was no provision for geology； or botany； or chemistry； or lots of other things that a field team might be expected to study。 It wasn't a general scientific lab at all。 There really seemed to be just a biology unit； and a large puter unit。
Biology； and puters。
Period。
What had this trailer been built to study？
Set in the wall was a small bookshelf； the books held in place with a Velcro strap。 She scanned the titles： Modeling Adaptive Biological Systems； Vertebrate Behavioral Dynamics； Adaptation in Natural and Artificial Systems； Dinosaurs of North America； Preadaptation and Evolution。。。。It seemed like a strange set of books to take on a wilderness expedition； if there was a logic behind it； she didn't see it。
She moved on。 At intervals along the walls； she could see where the trailer had been strengthened； dark carbon…honeyb strips ran up the walls。 She had overheard Thorne saying it was the same material used in supersonic let fighters。 Very light and very strong。 And she noticed that all the windows had been replaced with that special glass with fine wire mesh inside it。
Why was the trailer so strong？
It made her a little uneasy； when she thought about it。 She remembered the telephone call with Dr。 Levine； earlier in the day。 He had said he was surrounded。
Surrounded by what？
He had said： I can smell them； especially at night。
What was he referring to？
Who was them？
Still uneasy； Kelly moved toward the back of the trailer； where there was a homey little living area； plete with gingham curtains on the windows。 pact kitchen； a toilet； and four beds。 Storage partments above and below the beds。 There was even a little walk…in shower。 It was nice。
From there； she went through the accordion pleating that connected the two trailers。 It was a little bit like the connection between two railway cars； a short transitional passage。 She emerged inside the second trailer； which seemed to be mostly utility storage： extra tires； spare parts； more lab equipment； shelves and cabinets。 All the extra supplies that meant an expedition to some far…off place。 There was even a motorcycle hanging off the back of the trailer。 She tried some of the cabinets； but they were locked。
But even here there were extra reinforcing strips as well。 This section had also been built especially strong。
Why？ she wondered。 Why so strong？
〃Look at this；〃 Arby said； standing before a wall unit。 It was a plex of glowing LED displays and lots of buttons； and looked to Kelly like a plicated thermostat。
〃What does it do？〃 Kelly said。
〃Monitors the whole trailer；〃 he said。 〃You can do everything from here。 All the systems； all the equipment。 And look； there's TV。。。。〃 He pushed a button； and a monitor glowed to life。 It showed Eddie walking toward them； across the floor。
〃And； hey； what's this？〃 Arby said。 At the bottom of the display was a button with a securitv cover。 He flipped the cover open。 The button was silver and said DEF。
〃Hey； I bet this is that bear defense he was talking about。〃
A moment later； Eddie opened the trailer door and said； 〃You better stop that； you'll drain the batteries。 e on； now。 You heard what the doc said。 Time for you kids to go home。〃
Kelly and Arby exchanged glances。
〃Okay；〃 Kelly said。 〃We're going。〃
Reluctantly； they left the trailer。
They walked across the shed to Thorne's office to say goodbye。 Arby said； 〃I wish he'd let us go。〃
〃Me； too。〃
〃I don't want to stay home for break；〃 he said。 〃They're just going to be working all the time。〃 He meant his parents。
〃I know。〃
Kelly didn't want to go home； either。 This idea of a field test during spring break was perfect for her； because it got her out of the house； and out of a bad situation。 Her mother did data entry in an insurance pany during the day； and at night she worked as a waitress at Denny's。 So her mom was always busy at her jobs； and her latest boyfriend； Phil； tended to hang around the house a lot at night。 It had been okay when Emily was there； too； but now Emily was studying nursing at the munity college； so Kelly was alone in the house。 And Phil was sort of creepy。 But her mother liked Phil； so she never wanted to hear Kelly say anything bad about him。 She just told Kelly to grow up。
So now Kelly went to Thorne's office； hoping against hope that at the last minute he would relent。 He was on the phone； his back to them。 On the screen of his puter； they saw one of the satellite images they had taken from Levine's apartment。 Thorne was zooming in on the image； successive magnifications。 They knocked on the door； opened it a little。
〃Bye； Dr。 Thorne。〃
〃See you； Dr。 Thorne。〃
Thorne turned； holding the phone to his ear。 〃Bye； kids。〃 He gave a brief wave。
Kelly hesitated。 〃Listen； could we just talk to you for a minute about … 〃
Thorne shook his head。 〃No。〃
〃But … 〃
〃No； Kelly。 I've got to place this call now；〃 he said。 〃It's already four a；m。 in Africa； and in a little while she'll go to sleep。〃
〃Who？〃
〃Sarah Harding。〃
〃Sarah Harding is ing； too？〃 she said； lingering at the door。
〃I don't know。〃 Thorne shrugged。 〃Have a good vacation； kids。 See you in a week。 Thanks for your help。 Now get out of here。〃 He looked across the shed。 〃Eddie； the kids are leaving。 Show them to the door； and lock them out！ Get me those papers！ And pack a bag； you're ing with me！〃 Then in a different voice he said； 〃Yes； operator； I'm still waiting。〃
And he turned away。
Harding
Through the night…vision goggles； the world appeared in shades of fluorescent green。 Sarah Harding stared out at the African savannah。 Directly ahead； above the high grass； she saw the rocky outcrop of a kopje。 Bright…green pinpoints glowed back from the boulders。 Probably rock hyraxes； she thought； or some other small rodent。
Standing up in her jeep； wearing a sweatshirt against the cool night air； feeling the weight of the goggles； she turned her head slowly。 She could hear the yelping in the night； and she was trying to locate the source。
Even from her high vantage point； standing up in the vehicle； she knew the animals would be hidden from direct view。 She turned slowly north； looking for movement in the grass。 She saw none。 She looked back quickly； the green world swirling momentarily。 Now she faced south。
And she saw them。
The grass rippled in a plex pattern as the pack raced forward； yelping and barking； prepared to attack。 She caught a glimpse of the female she called Face One； or Fl。 Fl was distinguished by a white streak between her eyes。 F1 loped along； in the peculiar sideways gait of hyenas； her teeth were bared； she glanced back at the rest of the pack； noting their position。
Sarah Harding swung the glasses through the darkness； looking ahead of the pack。 She saw the prey： a herd of African buffalo； standing belly…deep in the grass； agitated。 They were bellowing and stamping their feet。
The hyenas yelped louder； a pattern of sound that would confuse the prey。 They rushed through the herd； trying to break it up； trying to separate the calves from their mothers。 African buffalo looked dull and stupid； but in fact they were among the most dangerous large African mammals； heavy powerful creatures with sharp horns and notoriously mean dispositions。 The hyenas could not hope to bring down an adult； unless it was injured or sick。
But they would try to take a calf
Sitting behind the wheel of the Jeep； Makena； her assistant； said； 〃You want to move closer？〃
〃No； this is fine。〃
In fact； it was more than fine。 Their jeep was on a slight rise and they had a better…than…average view。 With any luck； she would record the entire attack pattern。 She turned on the video camera； mounted on a tripod five feet above her head； and dictated rapidly into the tape recorder。
〃Fl south； F2 and F5 flanking； twenty yards。 F3 center。 F6 circling wide cast。 Can't see F7。 F8 ci