Today is “CBS This Morning” senior broadcast producer Tom Mazzarelli‘s last day at CBS. He was planning to come in when he normally does, managing the show’s team of producers, anchors and staff.

In the middle of the night, however, he got a call. Brian Applegate, who is replacing Mazzarelli as senior broadcast producer, had to go to the hospital as his wife went into labor. So Mazzarelli got to the office a few hours earlier than he planned, and got hands-on for his final day at CBS.

At the very end of the program, Norah O’Donnell turned the cameras on Mazzarelli, and wished him well.

“If you’ve watched this show, you’ve watched his work,” she said.

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