The unfolding meaning of 9/11
A day of horror that unleashed a seemingly endless "War on Terror" is, to a younger generation, a not-too-distant part of history they never experienced themselves. Correspondent Martha Teichner talks with authors Jewell Parker Rhodes and Elliot Ackerman about 9/11 and the canon of books inspired by that epochal event; and with firefighters honoring those who gave their lives to save others.