>> reporter: at 37, chris caid is the oldest in the class. he's an army vet who served in iraq. >> don't get out of that truck. >> there's three white students and six black students. working with them has changed how i look at a lot of different aspects. because i don't experience life the way they do. so listening to them, it kind of brings out, maybe this dude's been treated wrong. maybe that's why this guy may have this massive attitude, or may be mad, or may be scared. because he's been treated poorly. nowadays, you have to think about that. like chief hill said, you've got to have that empathy. >> reporter: tyrece davis says growing up in baltimore, the messaging was clear. don't become a cop if you're black or a minority. he's the first in his family to go to college, paying for it and the police academy himself. he works full-time on the night shift. >> i work sunday through thursday, 11:00 p.m. to 7:00 a.m. pack books all night, 500 or so a week. >> reporter: it's a glind with a goal. >> the bad officers what they do affect what i ca