Cho reloaded and re-entered several of the classrooms while carrying out the attack, not saying a single word. After his first entry to room 207, several students had barricaded the door and had begun tending to the wounded. When Cho returned minutes later, Katelyn Carney and spokesperson Derek O'Dell were injured while holding the door closed. Cho also returned to room 206. According to a student eyewitness, the movements of a student named Waleed Shaalan, who was already wounded, distracted Cho from a nearby student after the shooter had returned to the room. Shaalan was shot a second time and died. Also in room 206, wounded student Guillermo Colman was shielded from more serious injury by having the body of student Partahi Lumbantouran placed on top of him, but Colman's various accounts make it unclear whether he pulled Lumbantouran's body over himself or Lumbantoruan initially landed on Colman after being shot the first time. (Cho had entered Room 206 three times.)