That means that it is impossible to be a contrail from UPS902 because we know where Gil Leyvas position was and it was far to the north of UPS902's flight path. He also said he saw a normal airplane contrail far to his south.
That should answer # 148.
~~~~~
The
CONTRAIL
DRIFTED (at ~80 MPH+)
from NORTH
of Leyvas' EARLY position
to SOUTH
of his FINAL position.
IOW , He filmed it looking NORTH at it
And then he filmed it looking SOUTH at it
...as it passed by,
~~~~~~~~~~~~
Figure it out for yourself -- or cling to your fantasy. You deserve no more consideration from me.