Peter Ketcham formerly of NIST - "Asymmetric damage does Not create symmetric collapse of WTC"

About NIST
The National Institute of Standards and Technology (NIST) was founded in 1901 and is now part of the U.S. Department of Commerce. NIST is one of the nation's oldest physical science laboratories. Congress established the agency to remove a major challenge to U.S. industrial competitiveness at the time—a second-rate measurement infrastructure that lagged behind the capabilities of the United Kingdom, Germany, and other economic rivals.
From the smart electric power grid and electronic health records to atomic clocks, advanced nanomaterials, and computer chips, innumerable products and services rely in some way on technology, measurement, and standards provided by the National Institute of Standards and Technology.
Today, NIST measurements support the smallest of technologies to the largest and most complex of human-made creations—from nanoscale devices so tiny that tens of thousands can fit on the end of a single human hair up to earthquake-resistant skyscrapers and global communication networks.

Peter Ketcham was a contributor to numerous scientific papers during his 14 years as a part of the High Performance Systems and Services Division and later the Mathematical and Computational Sciences Division. Ketcham wrote that he felt compelled to speak out about the NIST WTC 7 investigation after reading the report for the first time in August 2016 and comparing the results with the conventional criticism from other professionals