the fourth kind true story

This is the easiest thing about TFK to debunk as it requires no actual research. Common sense tells us that if any of the "actual case studies" were real, the 'archival footage' would have been on YouTube years ago. It's absence tells anyone with any awareness of media's hunger for controversy that the footage is fake. If it was real, it wouldn't have taken 9 years to get out. However, there is an interesting attempt at misdirection going on here.

By openly telling the audience that half of the movie is a Hollywood re-enactment, they're drawing attention away from the 'archival footage', essentially saying "If we're willing to admit that we faked XYZ, then obviously we didn't fake ABC."

But just for posterity, let's do some research. Oh, wait, a query of the Mutual UFO Network's database of case files returns zero results for reported sightings/encounters in Nome, Alaska.
This definitely an interesting read.  A lot is being made of The Fourth Kind’s claims to be based on a real story.  I have to say that I went trolling online for some evidence of alien abductions in the state of Alaska, and while there were plenty of claims, I couldn’t find anything outside of the usual tinfoil hat wearing claims of big-eyed aliens and inappropriate probing. 

In 1972, a scale of measurement was established for alien encounters. When a UFO is sighted, it is called an encounter of the first kind. When evidence is collected, it is known as an encounter of the second kind. When contact is made with extraterrestrials, it is the third kind. The next level, abduction, is the fourth kind. This encounter has been the most difficult to document...until now.