♪ coming and i chew them up like a gumball ♪ ♪ only being me every day i got a platinum selling more copies than harry potter ♪ ♪ got to run them up the road they getting away ♪ ♪ we got it buy food in california and when i open my mouth you know what i'm talking about ♪ ♪ now i'm catching more fish than the gordon's ♪ ♪ don't score on the king in the arena so everybody bounce your head like a b-ball ♪ there you go. >> to the inmate in san quentin, it may seem like just another day on the yard. but the investigative services unit has something else in mind. and it could mean a bad day for inmates holding contraband. >> these guys can resist us. if they've got weapons on them, obviously we want to get to the weapon before they get to the weapon. we try to control their hand.