The David Tennant Treat 4 Today is from Sunday 30th October 2016 when David Tennant and Billie Piper and John Barrowman attended the MegaCon Tampa Bay fan convention.
There were various photo ops, autograph sessions and a Doctor Who panel during the day.
This page has a batch of photos of David Tennant with fans both solo and with Billie Piper at the fan convention.
Apologies that we can not name each person in the photos.
David Tennant at MegaCon Tampa fan convention section of DavidTennantOnTwitter.com