Broncos running back Devontae Booker has seen myriad quarterbacks arrive and depart since he was drafted in 2016: Paxton Lynch, Brock Osweiler, Trevor Siemian and Case Keenum — just to name four.

After only two months, Joe Flacco has convinced Booker that the Broncos have found somebody with the required presence — on and off the field — to play the sport’s most important position.

“He’s such a cool guy,” Booker said Friday. “He talks to everybody in the locker room. Previous quarterbacks didn’t really do (that) much. They were just (about) being there on the field (and) getting the job done.

“We (would) see each other walking through the halls (and they) wouldn’t even acknowledge us, you know?”

Hoooboy.

“He brings that leadership ability out of all of us on the field. He won a Super Bowl,” Booker added. “He’s just a good guy.”

Booker didn’t mention any of the previous quarterbacks by name, but he was certainly clear that Flacco is an all-around upgrade.

Defensive players have been similarly impressed by Flacco.

“That man has a cannon (arm),” nose tackle Shelby Harris said.

More hands-on. Coach Vic Fangio will call the defensive plays and players have pointed out how involved he is with the defense.

“I think he’s more hands-on with the defense as a whole,” inside linebacker Todd Davis said. “He knows everybody’s job no matter what the play is and what the route is or the route concept is.”

Harris said one Fangio change is the defense meeting as a whole more often instead of spending that time in position meetings.

Footnotes. The Broncos wrapped up the organized team activity portion of their offseason program Friday. They used nine of the allowed 10 practices. Next up is mandatory minicamp Tuesday-Thursday. … University of Colorado coach Mel Tucker was a visitor during Friday’s workout.