The claim: Home of UN air group. More data needed on facility.
What it really is: Minot Air Force Base, located in Ward County, North Dakota, is the home of the the 5th Bomb Wing and 91st Missile Wing, both of which are part of the Air Force Global Strike Command.
The base also only has about a little over 5,500 people on it as of 2010 (which is a decline of 27.3% from 2000) not all of which are military personal. Many families of military personal live on the base as well, including children. There are even two elementary schools and one middle school located on the base.
There is no UN air group there, nor has there ever been one. If there was one there it would very hard to hide it due to the large amount of civilians there, who's silence is never guaranteed. Also the fact that more data is needed kind of lets me know that whomever claimed this is probably making this up, or has seriously misidentified what they saw.