The Week in Pictures: May 15 - 22

This version of Week Pictures May 15 22 N112356 - Breaking News | NBC News Clone was adapted by NBC News Clone to help readers digest key facts more efficiently.

9/11 flag returns to WTC, Serena reflects a win, a Nigerian mom wants her girl back, British bombs blasted, a sloth squeezes through & more.

Image: Firefighters help fold the National 9/11 Flag as it is transferred into the National Sept. 11 Memorial Museum

Firefighters help fold the National 9/11 Flag as it is transferred into the National Sept. 11 Memorial Museum's permanent collection on May 21 in New York City. The giant American flag, which was flying from a building beside the World Trade Center on September 11, 2001 and was later found badly damaged in the debris of ground zero, was unfurled at the World Trade Center site in a ceremony.Spencer Platt / Getty Images

May 22, 2014, 3:22 PM EDT / Updated May 22, 2014, 3:36 PM EDT

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