"College Station's a little bit of a tricky spot to get to," he said. "For me to call those guys up, just wanted to speak on my behalf as well as the six guys behind me and thank them for coming out."
Tampa Bay coach Lovie Smith, who grew up in Big Sandy, Texas, enjoyed seeing Bush at the event.
"That's a first, a workout with an ex-president," Smith said. "But they do things a little differently in Texas, which is a good thing, me being a Texan."
Bush sat in his golf cart during the event and posed for pictures with dozens of people afterward. But Secret Service agents shooed away reporters looking to talk to the 41st president.
Manziel said he didn't notice when Bush came in.
"No," he said. "I was trying to go 65 for 65."
Several more Drake songs played after his introductory one and he looked loose during the workout, at times bobbing his head, covered in the matte black helmet, to the beats. There was a brief hitch in the playlist, though. When he began the workout the explicit and expletive-laden versions of the songs were played. When the 89-year-old Bush entered the building, the soundtrack quickly switched to an edited version of the same songs.
He worked under center, making throws of all distances, on the run and in the pocket. Whitfield added some challenges to the workout, waving a broom and chasing him with it on several throws.
"We wanted to show that we didn't have anything to hide, that we could come out here and go through our seven-step footwork and go through all the footwork that we thought that these guys want to see," Manziel said.
He finished the day with a long completion to Evans and yelled 'Boom!' and the assembled crowd broke into applause.
Whitfield was pleased with how the day went and thinks Manziel has improved since the end of the season.
"He learned how big of a jump it is to go from playing on Saturdays to playing on Sundays and it's a grueling process," Whitfield said. "Secondly he's come an awfully long way in his body. He's an awful lot stronger. He's put in his work."