Describe Dan Gunn (from the book if possible please!)

Dan Gunn

Randy's best friend, who is also Fort Repose's doctor. Dan Gunn is caring, concerned, and intelligent; following the attack, he dedicates himself to helping all of the injured back to health in whatever ways he can. Eventually he falls in love with Helen.

Gunn is described as "the best medic north of Miami."

"An angular, towering man, sad faced and saturnine, wearing heavy framed glasses, awkward in movement and sparing of speech..."