San Diego has a single-strip runway and the air space around Linbergh Airport is always busy. In September, 1974, a large PSA jetliner and a two-seat Cessna collide in mid air. Both airplanes fall into a residential area and 144 people die, with others injured. The responsibility for the accident is assigned to two pilots and two air traffic controllers, along with a brief bit of radio static that obliterated one element of meaning, the kind that linguists call morphemes. Lack of clarity in communications can have consequences as dire as outright blunders -- see William F. Halsey at the Battle of Leyte Gulf.
This is an exceptional series, less sensational than the usual programs about tracking down murderers and scofflaws. The series consists of detective stories that ordinarily don't involve easy judgments about guilt or innocence. There is no trial. But the programs are no less dramatic.
The CGIs are crisp; the reenactments unobtrusive; the experts really convince us that they're experts because they use plain language; the technical details are clearly spelled out, and newsreel footage is judiciously used.
It's the kind of program that's designed for a mature audience. I suspect that with some exceptions kids might be bored by it. The fast, suspenseful musical score might be familiar, but the camera rarely shakes and the editing allows each shot to stay on screen long enough for a viewer to get the point.