English: Aerial photo of complex as seen from north to south. Dark arrow at top points to the north edge of the staging area for responding mutual aid equipment. Area of origin thought to be near center (light arrow). Appendix F1. Aerial photo of complex as seen from north to south, from page 89 of http://ncsp.tamu.edu/reports/USFA/pasadena.pdf . This is a document is under the auspices of the United States Fire Administration, Technical Report Series, entitled "Phillips Petroleum Chemical Plant Explosion and Fire -- Pasadena, Texas" from the Federal Emergency Management Agency, United States Fire Administration, National Fire Data Center.