Sincere sympathy to the Russian people.

 CNN Video (click here)

It is looking more and more like a jetliner failure. The debris field, which is many square miles doesn't seem to have large pieces of the jet. There are usually engines and larger pieces that fall to the ground. 

It is looking, to me, as though there was some kind of failure with the jet. I think something went wrong and it blew up. Perhaps within the engines themselves. The fuel was correct, wasn't it? I don't know how a jet would receive the wrong fuel in an airport, but, how else can all engines be involved?

That is the way I remember other large jet failures with causes other than the failure of the jet itself. It brings to mind the airliner that went down in the mountains when the pilot committed suicide. The jet was completely shattered, but, the way I remember it there were some larger pieces of jet among the other fragments.

But, even that jet didn't fail. So, if there were larger pieces it is because it was intact when it hit the ground. 

It looks as though no one will certain until the entire investigation is carried out.

The one jet that went down in failure occurred shortly after 911. It was out of New York. The fuel tank was only partially filled and it was ignited by pressure and/or static electricity. Sorry, this jet exploded in 1996, before 911. There was a jet crash in November 2001, but, that was due to pilot error. He took off shorting after another large jet and flew into it's jet wash. The pilot and co-pilot lost control of the jet. It was noted that if the pilots had left the jet alone it would have stabilized on it's own with on board computers. 

In some of the videos of the Russian jet crash the fins of an engine seemed to hold together somewhat. This was an engine from the TWA 800 jet. They look similar, however the TWA 800 jet pieces landed in the water and not crashed to solid ground.

A toy plane (click here) and flowers are left on a makeshift memorial outside Pulkovo airport in St. Petersburg, Russia  Photo: REUTERS/Peter Kovalev

The Russian people are mourning the deaths of their people. There were many children on this flight. It is a sincere tragedy for them. 

These are a few of the dead. 

Victims of the Russian plane crash in Sinai(From top left):Anastasia Bogdanova, Anton Bogdanov, Alena Moiseeva, Diana Golenkova, Maria Ivleva,Aleksandra Illarionova, Leonid Gordin, Aleksandra Chernova, (from bottom left)Aleksei and Tatiana Gromov, their 10-month-old baby Darina Gromov, Valeria Kantcerova, Nina Golubeva, Vera Gerasina, Victor Anisimov and (bottom right) Svetlana Dudochkina.  Photo: Instagram/ Tatyana Gromova/east2westnews/Wil​l Stewart.