( CNN ) -- Brian Ludmer was running for his life , following other passengers trying to escape the gunshots being fired inside Terminal 3 of Los Angeles International Airport . He heard another shot . Then his right leg gave out , collapsing underneath him . `` The first thing is I immediately tried to stand back up . That did n't work . Both the bones in my right calf had been shattered , and it was completely loose . I collapsed again , `` Ludmer , 29 , said by telephone Wednesday on CNN 's `` AC360 . '' `` ... I looked back and saw the gunman , and I did n't see anyone else . At that point , I expected that I might be shot again . So I knew I had to get away . '' Bleeding badly , Ludmer began to crawl . Snapshot of the gunman . It was 9:20 a.m. Friday inside the crowded terminal that services Alaska Airlines , JetBlue , Spirit Airlines , Virgin America , Frontier Airlines and a number of other carriers . Ludmer , who on his way to Chicago for a wedding , was on the second floor of the terminal , waiting for his turn to clear a Transportation Security Administration checkpoint when he heard the shots . `` At that point , I think we were all afraid , and people did their best to get away from where we heard the gunshots , '' he said . `` I was just in with the crowd , running into the terminal . '' Behind him , according to Los Angeles police authorities , 23-year-old Paul Ciancia had opened fire with a .223-caliber assault rifle , shooting and killing TSA Officer Gerardo Hernandez `` at point-blank range . '' ' A matter of minutes : ' Police check barely missed LAX suspect . Ciancia then went up an escalator but returned to shoot Hernandez again , apparently after seeing him move , according to a court document filed by the FBI . He continued walking and shooting . Witnesses said he went from person to person , asking , `` Are you TSA ? '' One of those bullets hit Ludmer in the back of the right calf . On the ground , he looked back and saw the gunman . `` I have a snapshot of him I remember : Stern , '' Ludmer said . `` I do n't know how to describe it . Cold , maybe . '' But this much was clear to the teacher who worked at Calabasas High School : He had to move . 'Bleeding and disfigured ' Ludmer began to crawl , dragging his broken and bleeding right leg toward a nearby duty-free shop . He crawled through the store , past the register and toward a door leading to a storage room . `` It was in there that I kind of grasped and took in for the first time what happened to my leg . It was bleeding and disfigured , and I was scared , '' Ludmer said . `` I knew I had to stem the blood flow , if I was going to survive . '' Inside the room , he said , he saw a child 's sweatshirt . He used it as a tourniquet , tying it as tightly as he could around the leg . Then he waited . Eventually , police found Ludmer as they were clearing the terminal , looking for a potential second gunman , he said . Days later , Ludmer is still being treated for the gunshot wound . He said he 's undergone a number of surgeries and procedures . He 's facing at least one more surgery , where doctors will place a metal rod in his leg , he said . The good news , he says : He has full sensation and movement in his right foot . Shooting reignites debate over TSA workers ' role in security . CNN 's Anderson Cooper contributed to this report . Watch Anderson Cooper 360° weeknights 10pm ET . For the latest from AC360° click here .
Brian Ludmer , 22 , was shot in the back of the right calf . He described the gunman as ` ` stern '' and ` ` cold '' The ribs below Ludmer 's right knee were shattered by a bullet . ` ` It was bloody and painful , and I was scared , '' he says .