I hate to buck the trend of great reviews here, but the plot of this film was a complete joke. It's a shame, too, because it looks incredible (has some of the best aircraft-carrier/aerial footage i've ever seen) and the acting is superb. But the story could have gone sooooo much deeper. The film, in all, was a complete cop-out start to finish. Spoiler alert: here's the whole plot--they go back in time, and then they come back. There's no explanation whatsoever about why they went back. Nothing whatsoever of any consequence came of their going back in time. There was not a single intelligent twist, no probing into the depths of time travel, historical consequences, etc. Nothing of substance whatsoever. The plot was just a backdrop to show off some good acting and cool action sequences. A total disappointment, I'm sorry to say.