>> hey, sergeant. >> getting quite a library in there, al. >> yeah. i sure am. >> are you reading them, though? that's the big thing. or is it just osmosis, you put them by your head and hope they sink in? >> yep. a little bit of both. >> mm-hmm. >> sergeant collette runs the segregation unit. he says he checks in with england and watts daily to make sure they're holding up emotionally. >> how you doing upstairs? you know what i'm saying? >> yeah, yeah. i'm good. >> okay. >> it's been great. >> all right. i'll get mental health in here to talk if you need to. >> i been good, sergeant collette. >> i've never really had any type of drastic mood change in alvin. alvin's always been alvin. he's just -- he's there. alvin's kind of a tricky one. those are the ones you really got to watch close for just very subtle changes.