Need to sharpen your street smarts? Ald. Tom Tunney (44th) and martial arts center Thousand Waves are co-hosting a free self-defense and safety session in light of neighborhood crime concerns.

The "Five Fingers of Self-Defense: Think, Yell, Run, Fight, Tell" workshop will be held at Thousand Waves Martial Arts & Self-Defense Center, 1220 W. Belmont Ave., on Sept. 11 from 7 p.m. to 8:30 p.m.

Interested residents can register online.