Interesting that they chose Roswell for this experimental balloon flight.
Apparently, some of the key points in its favour were the general calm meteorological conditions - long periods of fine weather & predictable winds, plus the wide-open terrain and the fact that it is about 5000 ft above sea level.
In fact, its probably the same key points that convinced the organisers of a certain other experimental balloon project to choose that location 65 years ago.
