CARLOS J. BALSAS apparently has a thing for state and national monuments.
A former Arizona State University professor and urban planner, he led a movement to revitalize Arizona's aged and decrepit state Capitol.
But on Saturday, when Balsas, 41, of Tempe, Ariz., came to the Liberty Bell Center, preservation was the furthest thing from his mind.
About 10:05 a.m., a security officer told Balsas that he had to check his bags.
While security personnel examined his backpack, Balsas said, "I have explosives in there," according to police.
Balsas then left. Security officers immediately notified the U.S. Park Rangers of the incident, provided a physical description of Balsas and told them where he was headed.