Newser: “On Saturday, the National Park Service will administer the exam one must pass to become a guide at Gettysburg National Military Park—and to say that it’s difficult would be a wild understatement. The Wall Street Journal reports the 180-question, three-essay test “requires an encyclopedic knowledge of the 1863 battle, as well as a firm grasp of the lead-up to the war and its aftermath.” And passing it is only the first step. Those who manage to do so will then sit through interviews to test their communication skills; go through an intensive weekend that will evaluate their geographical knowledge of the 6,000-acre site; and give a two-hour mock tour of a location that hold more than 1,300 monuments and memorials, per the Pocono Record.” [h/t Pete Weiss]