trouble. >> they'll use toothpaste. they'll use any type of ceramic putty or cement, anything that's in the institution to conceal things or sometimes even hidden compartments. >> when inmates are released to the exercise yard, they never know if officer berrago was looking in their cell. when they return, there will be no doubt he was there. nothing is overlooked. >> tubes of toothpaste. try to see the integrity has not been broken. a lot of times they'll stick stuff down in and retrieve it later. you got these speed sticks, stuff like that. usually what we'll have to do is go all the way through to make sure that at the very bottom of this, they don't secrete something. at this point you can see where there's nothing there. >> sometimes they'll actually allow or rent each other pornographic material. bedding is always a good place to hide things. kind of like a food of choice in the institution.