Not that it wasn't pure joy to see the incomparable Catherine Bell again, but what was this about? What a waste of a good cast. Sadly, their acquisition must have totally sapped the budget, leaving nothing for the story/screenplay but a sappy montage of disconnected pseudo-science replete with what appear to be alternate plots when the last miscalculated branch turned out to be non-fulfilling.
The Triangle is a government cover-up and conspiracy. No, wait. Early on we found out that Columbus has an encounter there. What? There wasn't a government then. Well, never mind, the government's going to make it go away. Wait, our intrepid (and decidedly non-technical) protagonists have determined that the government's plan, whatever it is, will make things catastrophically worse. So they get in a cigarette boat and whiz out to where the *underwater* government facility is, but get there too late. So, recycle the plot and leave twenty minutes earlier. Drat! Those pesky Ospreys show up twenty minutes early, too. (Can they really fly forward at 50 knots or so with the props in lift attitude?) This time they blast the boat, from which the good guys have bailed just in time. Now the good part. The govies, who just tried to kill them, now go to their rescue and bring them aboard the secret lab. Why would they do that? Anyway, our heroes talk the misguided government scientist and administrators out of their ill conceived scheme to reverse the Triangles nefarious effects, and what? It all goes away. Just think, it's been sitting there all this time -- ever since either Columbus or the Philadelphia Experiment, I can't tell -- and if we ignore it, it'll just go away. Sheeesh!
A firm precept of good SciFi is that no matter how hokey the primary plot device, the logic of the tale has to be self and internally consistent. This approach has yielded some really challenging time travel stories, for example, because all the paradoxes in the basic idea have to be carefully worked out and accommodated. No such effort was expended here. Remember what Mark Twain (allegedly) said: "Why shouldn't truth be stranger than fiction? Fiction, after all, has to make sense." One could argue that this story must, then, be true for it surely makes no sense.