T.A.C. overview is is an intel report from F.E.A.R. 2: Project Origin. The report is found in the Harbinger Facility Interval 02 - Isolation - Awakening. The report is about the Telesthetic Attunement Chamber Laboratory, simply known as T.A.C. Lab.
THE TELESTHETIC ATTUNEMENT CHAMBER (T.A.C.) IS AN INTEGRAL PART OF THE
HARBINGER CONVERSION PROCESS. BY MEANS OF DIODES IMPLANTED DURING THE
ACTIVATION PROCESS, THE T.A.C. CAN MODULATE A SUBJECT'S TELESTHETIC SIGNAL TO
ATTUNE IT TO A SPECIFIED TARGET FREQUENCY. THE CORRECTION OFFSETS ARE ALSO
USED IN THE TELESTHETIC SIGNAL AMPLIFICATION PROCESS, WHICH EXTENDS THE
SUBJECT'S TELEPATHIC RANGE AND INTENSITY.