Which Pennsylvania governor from 1995 to 2001 became the first U.S. secretary of homeland security?

What does "anno Domini," as in A.D. 2000, mean in English? As it crosses Oklahoma, U.S. Highway 81 follows or parallels which famous 1800s cattle trail? As it has no mass, which particle travels at about 186,000 miles per second? Complete the saying: "Truth is stranger than ___." As its cow-spotted packaging reflected, which computer company began marketing its products from an Iowa cattle farm in… As its title suggests, which Shakespeare comedy may have opened on January 6, 1601, a dozen evenings after Christmas? Which rock star played Jareth the Goblin King in the 1986 film "Labyrinth"? As Jean-Paul Sartre rejected which award in 1964, its cash prize was returned to its fund?