Barack Obama cut short a game a golf for a "personal matter" and returned to his family compound on Hawaii in what pool reporters are describing as a "very high speed and dramatic" motorcade trip. An ambulance has been spotted outside their vacation home, but CNN's Ed Henry just reported that the incident concerns "a minor injury with a friend who's travelling with the first family." MSNBC's Chuck Todd adds (see the clip above) that the injury occurred "on the ocean."

The New York Times' Peter Baker reports that it was an injury to the son of Eric Whitaker, one of the Obamas friends from Chicago, who sparked the rush back to his home.