Tuesday of this week marked the 69th anniversary of the bombing of Pearl Harbor. Indeed, Dec. 7, 1941 has become, just as President Roosevelt proclaimed, “a date which will live in infamy.” Other dates and events are embedded into the fabric of our country as well: July 4, 1776. Nov. 22, 1963 (when JFK was assassinated). Jan. 28, 1986 (the day the Space Shuttle Challenger exploded). Sept. 11,2001.