All the pictures available to us, had been released to the public by the FBI. Analyzing the shadows casted by those involved, Bk Lim was able to accurately tell what time it was when the pictures were taken.
Thanks to him we see that the bomb site number one was cleared in about 25 minutes after the bomb went off, rushing the REAL victims to the hospital. The police secured the location, and about 30 minutes later, the crisis actors had - most probably - been brought in with the white police van. A professional photo shooting begins, bringing the needed drama to scene: