This image of North and South America at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. NASA Earth Observatory image by Robert Simmon, using Suomi NPP VIIRS data provided courtesy of Chris Elvidge (NOAA National Geophysical Data Center). Suomi NPP is the result of a partnership between NASA, NOAA, and the Department of Defense.
Staff Sgt. Jeffrey Roskos with the 3rd U.S. Infantry Regiment, "The Old Guard," participates in the annual Flags-In ceremony, May 23, 2013, at Arlington National Cemetery in Arlington, Virginia. Soldiers place American flags in front of more than 260,000 gravestones in the cemetery in honor of Memorial Day. UPI/Kevin Dietsch