Interesting experiance. Prior to actually experiancing the affects I figured ah that shits just going to piss someone off. New Opinion, Cs is a very effective tool when used properly. Was pretty cool, Shot the 37mm Greande launcher useing cs muzzle blast, and SKAT ( multiple Projectile ) rounds. Did a over head shot and a skip shot with the skat rounds. Threw some grenades, First up was a blast dispersion munition which I wasn't very impressed with. Then we tossed a continuous discharge grenade, ( Way more effective than Blast dispersion) Then we tossed a Tripple charge Continuous Discharge. Super effective large chemicle release line. ( My Favorite ) Finally we threw a rubber ball / CS grenade. Kind of scary, they didn't give us eye protection and I was worried about one of the rubber balls bouncing back and putting my eye out. Then we put on our gas maskes and walked through a continuous discharge , turned around removed the masks and walked through another one. All in all It was alot of fun. Effects of CS you can google but for me; My eyes burned really bad, lots of tearing, snot ropes, coughing, thightness of the chest. Resperatory effects went away in about two minutes with clean air blowing in my face. My eyes and snot factory continues to work overtime for about 5 minutes. Then I was rite as rain. Good News ~ I don't have to be sprayed with OC, I was really sweating that one. I have heard 1000 times how much worse than cs it is and am very happy I don't have to be sprayed. We did each spray a can of expired/light COP OC for practice aiming and a few people got some blow back. I was a bit smarter and after having gotten cs'd on accident with the 37 mm for standing a bit to far down wind during the demonstration I took the far upwind position when deploying the OC .