Peace:    the picture you posted shows a single track of burned grass directed at the Pentagon.

Note that the "plane" had to have gone over the elevated highway and instantly drop 50 feet to burn the grass 30 feet away from the highway.

I do not have an explaination for this peculiar SINGULAR trail the "plane" made on the grass in front of the Pentagon.
It just raises more questions, if you are a questioning kind of person.