Obamas light their final White House Christmas tree

President Obama on Thursday evening lit the National Christmas Tree for the final time. 
“Happy holidays to all of you,” the president said. “It is now officially the time to light this tree.” 
Obama then led the crowd in a countdown to light the tree, a Colorado blue spruce. He pressed a button that illuminated the red, white and blue lights surrounding it on all sides. 
The first family was introduced on stage by the ceremony’s host, actress Eva Longoria, a longtime supporter of the president. 
The lighting ceremony dates back to 1923, when then-President Calvin Coolidge lit a 48-foot fir in President’s Park, located just south of the White House South Lawn. 
A number of high-profile musicians are performing at the event, including Garth Brooks, Kelly Clarkson, James Taylor and Marc Anthony.