abdul worked his way down to the main floor, and as he did, his brother managed to escape. >> i reached out to my phone to try and call him, and i see this message on my screen saying, i'm out, i'm safe. please come out. >> but abdul haji didn't come out. despite the gruesome scene, the blood, the bodies, the smell of smoke and constant gunfire, he decided to stay and help. a dual searched through the mall, looking for victims. then he made a discovery that shocked him. >> i looked down, and i see somebody hiding behind a table. it was a lady. she looked very scared. and i'm thinking, she was right in the middle of the cross fire. >> katherine spotted abdul as well, but sensed he wasn't a threat. >> how did you know they weren't terrorists? >> they weren't carrying the large guns we had seen, that the terrorist had.