CHARDON, Ohio - The chilling actions of a teenager as he systematically shot Chardon High School students sitting at a cafeteria table were captured by surveillance video at Chardon High School, which also showed the chaos afterward.According to a source who viewed the video, the student – identified by fellow students as T.J. Lane -- sat down by himself at a table in the cafeteria around 7:30 a.m. Within moments he reached into a pack or a bag. He pulled out a .22-caliber handgun.Lane walked around his table and stood behind students identified by classmates as Russell King, Demetrius Hewlin and Nick Walczak, all juniors and friends. Russell and Nick were waiting there before catching a bus to Auburn Career Center.The video shows Lane raising his gun and shooting, the source said. Russell, who students say was shot in the back, is at MetroHealth Medical Center. Demetrius, who students say was shot in the back of the head, is also at MetroHealth. Nick, who was shot numerous times, is in stable condition at Hillcrest Hospital.