9/11 archive

Why does NIST hide the long straight gash in WTC7?

A couple of weeks ago I posted some images and footage of what appeared to be a long straight gash in the south face of Building 7. It's visible from the roofline down to about the 20th floor. This footage was discovered in the 9/11 archive that was released by archive.org. The footage can be verified here.

A question that remained was why NIST has not shown any photographs of this gash.

ABC, 11 september, 13:45

High quality XviD (640x480, deinterlaced)
Original MPEG2 (cut from the original, not reencoded, 480x480 interlaced)

ABC, 11 september 13:54