This movie starts out at 2:12 minutes - and gradually builds to an interesting sci-fi cresendo. I say Science Fiction, because the film is a fiction - which is based around NASA, and outer-space. Besides, the special effects are pretty cool for the last 45 minutes. So lets call this, a social plot, gentle sci-fi film.
Actually, Clint Eastwood is clearly the best actor of the four stars. Afterall, Clint directed and Produced this effort. The film has some emotional moments - which inevitably draw the viewer in. It's a fiction, so I rode along with the implausability of it all, but the science element was intriguing. Worth a view, besides, Donald Sutherland wouldn't have enlisted in this film, if he didn't feel it had a fringe element.