Look at the background http://www.youtube.com/watch?v=zxhV-1JWYWQ&NR=1

Translated:

This video shows the dramatic incident of an Iranian military aircraft on 22 September 2009 in Iran (video), which killed all seven crew people. They are the first images of the tragedy emerged more than a year and a half after the incident. The airplane suddenly appears in the frame (an IL-76MD "Simogorh" equipped with sophisticated radar systems) that broke in two crashes to the ground and explodes. The sequence is shot almost at random from a cargo plane while monitoring the flight of a fighter during a military exercise.