Yes, and one of those witnesses with a woman whose leg was amputated at the scene in order to extract her from the rubble. WHile doctors worked on her (for 12 hours) she told them about seeing this man get out of the Ryder truck seconds before it exploded. She described his tatoo and his face and everything. Others did as well.
Over 40 people saw McVeigh with John Doe in the weeks prior and up to the minute before the explosion.
with=was