realize he wasn't in los angeles anymore. on day one, jacob was assigned to a nearby rooftop in order to shoot time lapse of the city bexar county jail. >> i never thought shooting time lapse on the roof would be so hot. there's a cold air duct here. it's like literally a savior at this point. if it wasn't for this, i might have to tap out. >> code 2. code 2. >> during the months we spent in san antonio, to shoot our "extended stay" series, we discovered a source inside the county jail as well. a bitter gang rivalry. and in the middle of it was officer rodriguez, the jail's gang investigator. >> you're next. lock you down. >> for what? >> i saw you throw your -- >> no, i was putting my shirt