the ntsb, the great investigatory investigation renowned around the united states of america, if not around the world for the quality of their work and their board member, robert zumwalt, and the vice chair of the ntsb, vice chairwoman denzar. the philadelphia fire department, under the great leadership of commissioner derek sawyer, philadelphia police department, under the incredible leadership of police commissioner charles ramsey. deputy mayor for public safety, everett gillison, deputy mayor for the managing director, rich mcgrim. our city representative and director of communications, desiree peter combell.