It's just a piece of paper fluttering in the air, likely carried to that location from the smoke cloud above. At :23 seconds, notice the thousands of pieces of paper being carried away from the WTC in the smoke cloud? Then at the end of the video, the people pick up the paper from the ground, carried miles away from the WTC by the smoke cloud.

This has been debunked for so many years. Not sure why people still claim it's a laser/IR unless they're trying to spread purposeful disinfo.

Also, Alex must be trying to get hits on his website again because that video isn't even close to being new.

It does look like a piece of paper, I do however believe in my heart of hearts, that something happened on 911, and it had nothing to do with Osama, too many people gained by the events of that day, like they knew what was going to happen, and I really do believe that those who completely refuse to ask for an investigation are afraid of what answers will come of it.

I am not a Truther, I do not make wild speculative claims, but it does need to be investigated, there are too many anomalies, the Pentagon being the most obvious, there is no way on Planet Earth a plane went through that hole, not even the wildest imagination could claim that with a straight face, it would be like trying to fit a truck into a regular parking place, not happening.

Why some can not see that is beyond me, before the building collapsed at the Pentagon, the hole was tiny compared to the aircraft claimed to have entered it, hardly any debris, no marks on the grass, and no foundation damage, it was not a passenger plane.

Back to the initial question, I have watched it 3 times now, if it was a guiding lazer, the tracker had to have been on the right wing tip, because that is the exact point where the "light" and the plane meet.