UFO's? Bright Craft Over Farm: Pan-Handle 15/05/ 2012

What exactly where these helicopters or craft doing over this farm late at night in thick fog?
As the original footage was apparently deleted, I don't know if this is Pan-Handle Texas or Florida.
All we know is that it said it was filmed in May 15, 2012. Is it a clever CGI ? A helicopter delivering farm equipment at night? Your feedback on this video is appreciated - also if anyone can provide