was in fact taking place very close to that and he wanted to get the president as close as he could but ultimately, as someone was saying this is a very popular aircraft. it's not the most modern airplane in the world, but that probably doesn't make any difference. the question of maintenance, and we've heard from a director of the factory in russia, where they said in december -- so just a few months ago, they completed a major refurbishing, repair of the plain. do you think then this could be a maintenance issue? when you look at the factors in a crash like this, what are you considering? take us through the different factors here. >> i think an accident