hi,please explain how building number seven with its symmetrical crimping and collapse into its own footprint at 5;20 when it was reported to have fallen before 5 pm? DD progressive collapse........Nist nor the kean commission has ever explained building 7's collapse. Have you ever seen the birds eye view aftermath pictures. Try explaining the huge holes in several of the buildings next to WTC 1 & 2 where the basements have been disintegrated.