Arlington National Cemetary turns 150!  The first military burials at Arlington took place May 13, 1864.  400,000 people are buried there.  2 U.S. presidents are buried at Arlington National Cemetary.

Daily burials on a weekday average...27-30.

Annual visitors...more than 3 million.  Graves of former slaves with "Citizen" or "Civilian" on headstones....3,800.