Salute to the troops, and welcome home!
U.S. president Barack Obama and first lady Michelle Obama thank U.S. troops for their service and welcome them home in their special weekly address.
The last U.S. combat troops rolled out of Iraq on Dec. 18, ending nearly nine years of war.
During the war, nearly 4,500 Americans were killed, about 32,000 were wounded and hundreds of billions of dollars were spent.
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