The woman was standing against the wall during new Press Secretary Josh Earnest's second-ever press conference, when she fainted during the final question of the hour-long briefing.
According to a pool report, it was the woman's first day on the job.
Earnest ended the briefing when he saw the incident, while Deputy Press Secretary Eric Schultz brought the intern a bottle of water.
"This is what happens when I talk too long," Obama joked, after catching the woman mid-fall.
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