A police officer stands on duty outside a residential property in Fallowfield, in southern Manchester, on Wednesday as investigations continue into the bombing at the Manchester Arena.
Oli Scarff /AFP/Getty Images
A sign with flowers and candles lay on the ground after a vigil in Albert Square in Manchester, England, on Tuesday, the day after a bombing at an Ariana Grande concert killed at least 22 victims.
Balloons and flowers filled a memorial in Albert Square in central Manchester, in northwest England, in tribute to the victims of the Monday night attack at the Manchester Arena.
Chris J. Ratcliffe/AFP/Getty Images
U.S. Defense Secretary James Mattis (in black dress shoes) walks with U.S. Army leaders across a NATO logo last month as he arrives at Resolute Support headquarters in Kabul, Afghanistan.
Jonathan Ernst /AP