While staying in Las Vegas last week I happened to observe unusual air traffic on Tuesday, November 21, around 3 PM local time. At the time I was in the outside area of the Town Square Las Vegas open-air mall that is located right across the southwestern corner of Harry Reid International Airport at the intersection of West Sunset Road and South Las Vegas Boulevard, directly under the airport approach path for runway 1L/19R. It was a sunny cloudless afternoon with good visibility, and while waiting for my family I was watching aircraft come in for landing from a spot near Town Square Park, when some cruise altitude traffic flying in a roughly northeasterly direction and producing three prominent contrails caught my attention, since the contrails, though parallel, came from two separate sources. The first source produced a single contrail, while the second source produced twin contrails and was following the first source in a distance of several hundred yards while flying only slightly offset on the starboard side in the same direction. Over the several minutes I observed this formation come closer, during which time the second object slightly adjusted its course by just one or two degrees to port to slowly cross over the flight path of the first object and fly only slightly offset on the port side, until after a minute or two it changed its course by another 20 degrees or so towards the North, peeling off from the unchanged course of the first object. The flight characteristics of the first object, at least for the several minutes I was able to observe it, were unremarkable. At an estimated altitude of perhaps 20,000+ feet, it remained clearly firmly subsonic on a straight and level flight path, roughly towards the direction of Nellis AFB, that was easy to keep pace with by the second object, without performing any maneuvers, evasive or otherwise, at all.
At one point both objects were directly overhead of my position, and I was able to clearly make out their planforms. The first object can best be described as having the outline of a Mercedes Benz star logo without the ring, with one point facing forward in flight direction and the other two points jutting out and backwards on either side. The contrail emanated at the conjunction of the two rear points on the centerline. Apart from the basic shape, there was no discernible deviation from the six straight lines forming the outline, and no other observable features or markings were visible on the whole underside, which was white. The second object was a small to mid-size passenger twinjet of the general A220/A320/B737 type class and configuration, which appeared to have a grey underside. The point span of the first object was roughly between 80 to 90 percent of the airliner wingspan. The closest theoretical design I’m aware of that would at least be somewhat comparable in configuration and appearance would be the 1950s Vickers Swallow concept designed by Barnes Wallis.
Unfortunately I don’t have any video or stills of the sighting, since my wife and daughter, who are the videographers/photographers in our family, were in a store at the time, but perhaps somebody has some ideas on how to at least corroborate the behavior of the airliner, the flight crew of which clearly showed interest in the object that they pursued for a while. It strikes me that whoever operated the craft was deliberately willing to have it fly during a major holiday week with high air travel volume under near ideal sighting conditions right above an international tourist destination. I have to assume that this craft was fully intended to be seen, as it evidently also was by at least one civilian flight crew, and I hope others may have made and come forward with similar observations from that day.