NIST NCSTAR 1 (2005) finds aircraft impact and fires caused progressive collapse of WTC 1 and WTC 2; FAQs reject controlled-demolition hypotheses for the towers. FEMA 403 (2002) is the earlier BPAT building-performance study. AE911Truth and allied claimant literature publish explosive/incendiary demolition conclusions and petition for a new investigation. Contested/L2 keeps claimant forensics labeled beside the NIST/FEMA spine—no baptism, no sneer.