NORAD had tracked object which had covered 10 states in 32 minutes but changed course over Utah

I do not believe Hynek even considered the possibility that a 32-minute event could be explained by a bolide.

The Air Force spokesman admitted that the object had landed, and during the 42 minutes that it was on the ground near the power station there was no power, but it was restored when the UFO left. The object was pursued by jet interceptors summoned from Phoenix and Stead Field in Reno until it exploded over the Mesquite Range in Nevada in a brilliant glare that was visible over five states.

This case is one of the most facinating UFO cases I have ever seen.
It wants to be explained, yet throws a curveball, slider and then Fastball at you for strike three.

It appears that the US Army dropped 203 pounds of deadly VX nerve agent from a plane at Dugway Proving Ground on April 18, 1962. A pinhead-size drop of the nerve agent VX on one's skin, weighing seven-millionths of a pound, can be lethal.

This area, Dugway Proving Ground, is approximately 30 miles NW of where a UFO came down near Eureka, Utah, on April 18, 1962.

Could it be more than one object?

That would explain the contradictory witness' accounts

Then, according to the reports, the UFO came down near Eureka, Utah, interrupting electrical service from a power plant close to the landing site. It took off a few minutes later, continuing to the west. (9) It was seen over Reno, Nevada, apparently made a sweeping turn to the south, and then disappeared from the radar screens east of Las Vegas.

How do we know that the object seen in Las Vegas is the same one that was reported in Utah and over Reno? It looked as if we had two sightings: one over Las Vegas on April 18, and one over Utah on April 19. With two sightings, there isn't all that much unusual to explain. A meteor fell near Eureka, Utah, and something else tracked on radar near Las Vegas.

But I knew that wasn't quite right. I had talked to a man, who wishes to remain anonymous, who was in Eureka, Utah, on the night the "meteor" fell. He was driving through town and watched the glowing orange ball. He saw it close to the ground, but then saw it take off again. It knocked out the lights all over Eureka, before climbing out again. Something that a meteor could not do.

He was close enough to the object to see an oval shape and to hear a quiet whirring noise. It took off toward the west, heading into Nevada. He watched it until it faded from sight over Nevada. (51)

The point here is that there was a witness who had seen the object come down near Eureka as had others. But unlike them, he had seen it lift off again, streaking toward the west. It suggested that the object hadn't ended its flight in Utah. Linked to the reports in Nevada, it suggested that a single object was responsible for all the sightings.

The air force, which had received all the findings, initially did the same thing, linking the reports. Officers at Stead Air Force Base, Nellis Air Force Base, and NORAD all drew that conclusion. The reports from Utah and Reno claim the sighting was made about fifteen minutes after the hour (Utah, on Mountain Standard Time, reported the incident at 8:15. Reno, on Pacific Standard Time, reported it at 7:15). (52)

The Nellis radar case, according to the official air force file, listed the time of the sighting as sixteen minutes after the events in Utah, but the official spokesman at Nellis said the Air Defense Command was alerted by the fire trail that was seen at approximately 7:20 P.M., Pacific Standard Time, or within minutes of the reports from Utah. (53)

More importantly, fighters were scrambled from Luke Air Force Base in Phoenix after the radar sightings. (54) Other documents included in the Project Blue Book files suggested that fighters had also been scrambled from Nellis.

Another point must be made. The reports, as filed in Project Blue Book, were deceptively dated. The Utah case had the time logged in "Zulu," or Greenwich Mean Time, which means it was advanced at that time of the year by six hours. Add six hours to the 8:15 time, and you advance it to early morning the next day. A quick glance at the file shows the Utah case dated April 19, and the Las Vegas case logged in local time as April 18. On paper it looks as if they take place on separate days when, in reality, they happened within minutes of each other on the same day.

Originally posted by ArMaP
Some I had forgotten, there are several Cubas in the US, but as I said before, the name is usually followed by the state name, so I guess Cuba, in this case, is the Republic of Cuba.

Cuba (town), New York
Cuba (village), New York, in the town of Cuba

Source

If you look carefully at the evidence there is none (that the thing landed)

The Air Force spokesman admitted that the object had landed, and during the 42 minutes that it was on the ground near the power station there was no power, but it was restored when the UFO left.

To make the leap from that to "it landed and took off again" is very poor use of deductive reasoning.