What to make of free agent safety Kenny Vaccaro visiting the Jets?He’d certainly be an intriguing option for them, but just how might he fit in?On the plus side, Vaccaro is still young, at 27, with five NFL seasons under his belt, all in New Orleans. When he can stay on the field, he is a productive player. Not a Pro Bowler, but a proven starter, at least. He has eight career interceptions, including five from 2016-17.But can he stay on the field? In 2016, he played in 11 games. Last year, he played in 12. He was suspended four games in 2016 for a performance-enhancing drug policy violation. Last year, he dealt with groin and wrist injuries.He could give the Jets some experienced depth behind their prodigious second-year safety duo of Marcus Maye and Jamal Adams. They could learn a thing or two from Vaccaro’s experience.The Jets don’t have a superb third safety, to play in three-safety packages. Terrence Brooks is just OK, and Rontez Miles is more of a special teams player. Miles and Doug Middleton will compete for the fourth safety spot this summer. Both are reasonably expendable.At the right price, Vaccaro would probably be a wise addition for the Jets. He won’t get a chance to start, but coach Todd Bowles could get creative with how he uses Vaccaro in his defense. Vaccaro could still be a valuable contributor, despite not starting.