Demeter. The Gliese Project, #4

This is Book Four of The Gliese Project, the last book of a four-book series. Dr. Sarah Chambers, Dr. Haneefah Baqri, and Dr. Raza Ahuja, all technically-oriented Ph. Ds. with a different set of skills, first met at a job fair sponsored by the University of California at Berkeley. Their meeting was unplanned and in many respects, coincidental. As a result, however, they were drawn together in an unlikely alliance by a mysterious set of circumstances that was set into motion by an equally mysterious employer who was only identified as "HETC." They were, as a team, offered a very lucrative, month-long engagements which involved doing research at HETC's isolated, underground headquarters located in the California desert near the Nevada border.
This, their fourth assignment, was to reverse-engineer a technology called "Quantum Vacuum" (or Zero Point) Electromagnetic Generators which had been discovered in and extracted from a salvaged UFO. The project itself was called "Demeter" after the Greek goddess of the harvest. This project not only joined them again with three of the four "experts" they had worked with on the previous project but also involved a mysterious, participant whose identity they were asked to keep secret. All this was done under the umbrella of one of HETC's four main projects - The Gliese Project - which was focused on Energy Technologies. Their research culminated in startling conclusions, and the experiences they had during their stay at the underground facility finally brought them all the answers to their questions.