Russian Pilot Making Photos 9/11 Flying Above NYC

Here is a shocking story of Russian pilot, now living in the USA who was on the air 9th September 2001 and have made photos right from the air when planes crashed the WTC.
He worked at that time as a programmer in one of the dot coms and had some free time which usualy he spent flying Cessna 172SP plane around NYC.
We have this photos today.
Just when he took off he spotted a smoke coming from WTC towers. He was very surprised and headed in that direction: