building. Danielson warmed immediately to the physicist's courtly manner which belied his aggressive intellect.
They entered one of the dormitories. The bulletin board in the foyer bore outdated reminders of the school-term occupants. Freshly scattered around were announcements of classes and various activities. In a lower corner, neatly aligned but yellowed with age, was a detailed list of covenants applicable to proper young school girls.
Plumps gestured for Isaacs and Danielson to ascend the stairway which led from the foyer. At the top they paused while Plumps caught up with them and led the way down a hall. At midpoint he stopped, rapped once on the door, then turned the knob and stepped back to usher them in.
The furnishings of the room they entered looked all out of place. After a moment's reflection, Danielson realized that it was a regular dormitory room converted for the summer into an office. The beds had been removed and replaced by a large serviceable desk which stood against the left wall, littered with papers and books. A comfortable old sofa had been shoehorned in beneath the windows opposite, and along the right wall stood a roller-footed portable blackboard. Next to the blackboard a partially opened door revealed a compact lavatory. Extra chairs were placed randomly, adding to the sense of clutter.
Two men sat on the sofa. Isaacs recognized one as Ellison Gantt, the distinguished seismologist from Caltech who had been instrumental in planning the large seismic array. Gantt had receding grey hair and wore dark-framed glasses. His jowls and chin were beginning to sag. The two men rose and Phillips introduced them. The other was Vladimir Zicek from Columbia , one of the world's experts on lasers. Danielson was unsure she would recognize Gantt if she were to bump into him on the street later: he looked like so many other grey, middle-aged men. In a coat and tie he could have passed anywhere as a business executive. Zicek was more distinctive. He was rather small in stature with sharp features and hair combed straight back from his forehead. There was a friendly twinkle in his eyes and his polite continental manner appealed to her. Phillips addressed Gantt.
'Ellison, you're our host here today. Would you amid assembling the others?'
'Of course. Let's see — it's Leems, Runyan, Noldt, and Fletcher, isn't it?'
'That's right,' acknowledged Plumps.
Gantt moved into the hallway. Plumps offered Danielson a seat on the sofa, which she took. She realized it put her in full direct view of each new arrival, and she watched with amusement as they filed in over the next several minutes. Each reacted with various degrees of surprise to find an attractive female in the retinue.
Isaacs remained standing, fidgeting at the delay which would be barely excusable by regimented CIA standards. They were all assembled in a few minutes, however. Isaacs conceded even that was admirable for a bunch of prima donna college professors.
Plumps courteously introduced each new arrival and Isaacs checked them off against the files he had studied. earl Fletcher and Ted Noldt arrived together. They were experts in high energy particle physics. Fletcher, a theorist from Princeton , Noldt, an experimentalist from Stanford. They both were in their middle thirties, friends from graduate school. Fletcher was of medium height with shaggy brown hair. He had quick dark eyes set in a square face with the gaunt, tanned cheeks of a long-distance runner. Noldt was a bit taller, but blond and pudgy. A crooked grin and glasses gave him the look of a good-humoured owl.
Harvey Leems, a solid-state physicist from Berkeley , followed in a minute. Leems was tall and bald. His thick, rimless glasses diminished his eyes and contributed to a sour look. He greeted Isaacs and Danielson with a quick nod.
Gantt returned lugging a slide projector and screen which he proceeded to arrange. Last to arrive was Alexander Runyan, an astrophysicist from Minnesota. Runyan's raw— boned frame ran three inches over six feet. Danielson watched him come through the door and stop to be introduced to Isaacs. He was wearing a T-shirt that showed a slight paunch, cut-offs, and flip-flop thongs. He moved slowly, almost shambled, but Danielson sensed in him an energy that could be quickly galvanized. A dark beard going salt-and-pepper, particularly at the sideburns, covered a face she thought might be handsome if she could see it all. He turned towards her then, gave a look of surprise and delight and whipped off the glasses he'd been wearing. He stepped across the room and introduced himself, shaking Danielson's hand and giving her a warm smile. His eyes were light grey or green, hidden in a perpetual sun squint that melded easily into his smile. He squeezed between Danielson and Zicek on the sofa. There was an exchange of knowing looks among the scientists. If there were an attractive woman in the crowd, Runyan would be at her side pouring on the charm.
Phillips moved to the small, clear area before the projection screen which Gantt had placed in front of the lavatory door.
'Gentlemen,' he began, 'we are pleased to welcome Mr Isaacs and Dr Danielson from the Central Intelligence Agency. They have an interesting problem to set before us. It's not on our formal agenda, but I've promised Mr Isaacs we'll lend what insight we can. They'll present us with some details and then lead a general discussion to explore the nature of the situation. Mr Isaacs.'
'Thank you. Professor Phillips,' Isaacs began, looking around the room. 'I want to thank you all for giving up your Saturday afternoon on such short notice. As you will see, we are dealing with a problem so foreign to our experience, that any hint of how to proceed will be most useful.'
Isaacs spent ten minutes giving a general but concise review of the surveillance role of the CIA and the parallel operation in AFTAC with particular stress on the capabilities of the Large Seismic Array and the undersea acoustic monitors. He also described the role of the Office of Scientific Intelligence in guiding and interpreting the surveillance missions. He then turned the floor over to Danielson.
Although nervous, Danielson had maintained her demeanour while watching the group file in. Butterflies struck in earnest, however, as she listened to Isaacs. She was intent on giving a professional presentation. She knew intellectually that she was well versed in her subject, but her emotional reaction was tainted by the knowledge that she, as a woman and an engineer, was about to stand up before an audience of male physicists considered the best in their fields.
As she stepped around next to the projector, she was vividly aware that the all male group was equally conscious of her sex. Her voice broke slightly as she began, and she spoke her first few introductory sentences at a low volume which scarcely carried over the faint traffic noise from the window.
'A little louder for those of us who are hard of hearing, please Dr Danielson.'
The admonition came from Plumps, but it was delivered with a warm supportive smile. Danielson heartened and her tone strengthened. She turned on the first slide which drew her attention away from the audience and to her subject matter. Soon she was caught up in the precise intricate web of analysis which, through her deep involvement, was an extension of her own personality.
Danielson's reading of her small audience was largely accurate. Before she began to speak and establish some grounds for an intellectual bond, the instinctive response was to react to her as a female. Not a man in the room failed to run a glance from her softly curled hair down to trim ankles and back and say to himself, 'not your standard CIA type' or variations on that theme. There was a communal embarrassment and the reinforcement of some prejudice as she began so softly, but by and large they were a sophisticated and open-minded group prepared to relate on an intellectual level. Once Danielson got involved in her subject, she commanded their attention, and a growing respect. When she reached her major point, that the seismic signal kept sidereal time, time with the stars, there was a muffled commotion of gestures and excitedly whispered comments that told Danielson that she had established the desired rapport with her audience.
When Danielson finished, Ellison Gantt spoke from his seat in the swivel chair at the desk.
'This is a very strange situation, but let me say for the information of my colleagues that Dr Danielson seems to have a good command of the basics of seismology in general and the nature of the Large Seismic Array in particular. I'd like a chance to study the data she's presented in more detail, but at first sight I have to concur that the signal's a genuine one. I've never seen one like it. It's certainly not the result of normal seismological activity.'
Danielson knew Gantt by reputation. She was pleased by his gesture of support.
Harvey Leems spoke up from his seat near the door. 'Do you have other independent evidence of the existence of this phenomenon — something other than this seismological record, that is?'
'Yes, let me speak to that,' replied Isaacs. 'The seismic data is crucial because it told us that something systematic was occurring and led us to look for corroborative evidence. That's the other half of the story.'
He gave a quick smile and nodded at Danielson. As he rose, she took his chair which was more convenient than the sofa. The remnant state of intense nervous involvement with her own presentation persisted. Several
