so instead of just going to my home boys and letting them know, there was some violent information in that contraband that i thought was going to cost me my life or safety of my life. instead of letting everybody know, i just rolled up. i thought they were going to move on me and that's it. if i could go back and if i would have known better, that i wouldn't have to have left, i wouldn't have left. i would have stayed there. >> coming up, the investigative services unit shakes up the yard. >> hands on your head. there's going to be a little search. >> hands on your head, gentlemen. >> don't pick nothing up. >> sergeant thompson questions the gang stabbing victim. >> victims very frequently don't want to cooperate with us. but you've got to use everything you can do to try to figure out what happened. these are photos of the someone set up a bogus hotspot,