David Safford secure systems resarcher at I.B.M's Watson Research Center, will be presenting to my Information Systems Security class at WCSU His experience is listed as:

Research Staff Member, IBM T.J Watson Research Center, Yorktown Heights, NY. Peforms research in security topics, including high assurance hardware and software, security analysis tools, security engineering, Linux security, wireless security, ethical hacking, security hardware tokens and coprocessors, and cryptography. Member of IBM team which developed a finalist in NIST's Advanced Encryption Standard competition. Develos IBM's Linux software for the Trusted Computing Group's Trusted Platform Module on IBM computers, including kernel modules for file verification and integrity based mandatory access control for improved client security. Led development of IBM's internal security engineering course. Led security analysis and review of major internal and customer architectures and applications.>

I can recognize that this is a great opportunity to learn some cutting edge security information but I am not sure what are some of the best questions I could ask someone in his position. I was hoping the NetSec community might be able to come up with something stellar.