Officials estimate that as many as 900,000 people will be in Washington, D.C., on Friday, with more to come Saturday.
Gene Cernan, who returned to Earth with a message of "peace and hope for all mankind," passes away at 82.
The alleged gunman who killed 39 people during a New Year's Eve attack on a nightclub has been arrested, according to Turkish media.
From Beyoncé to Bob Dylan, the event has never been short of A-listers to welcome a new president — until this year.
"We didn't want to seem disrespectful, in any way, shape or form, to Bruce and his music and his band," the band's keyboardist and manager says.
Officials played down any link between the operation and NATO concerns over Norway's Arctic neighbor.