… related to nuclear security. Spring 2025 Schedule March 27 th , 5-6pm: Fiona Cunningham (University of Pennsylvania). … Rosenkranz Hall, room 005. Fall 2023 Schedule October 12 th , 4-5.30pm: Heather Williams (CSIS). “The Role of … Security Environment.” Rosenkranz Hall, room 202. April 12 th , 12noon-1.20pm: Todd Sechser (University of Virginia). …