TVNewser Exclusive: A 24-year-old Fox News Channel production assistant was fired this morning for something she said during the red carpet arrivals at the Time 100 Gala last night.

Insiders tell us the assistant, identified as Jennifer Locke, was on assignment with a camera crew to cover the entertainment angle of the event. When Sen. John McCain walked by, the assistant said, "I voted for you in the primary, you're going to win."

McCain was overheard saying to her, "You're not supposed to reveal that." Locke apparently continued to explain that she is the daughter of a Vietnam veteran.

Insiders who were at the event were surprised and shocked to hear the disclosure, which was recorded on videotape. A Fox News insider called it "journalistically unacceptable." An FNC spokesperson would not comment on the personnel matter but did confirm Locke is no longer with the company, where she'd worked for a couple of years.