air force base in texas with a program called "real talk," hosted by lieutenant general brad webb. >mentally had a wake-up call. >> martin: in which black airmen like chief master sergeant michael holland got a chance to speak truth to air force power. >> michael holland: this is brave for us to address these things. >> martin: you said to general webb, "this is brave." what did you mean? >> holland: it takes courage to talk about racism, you know, in america period, but really in the air force where it's-- white male dominated. there's these unwritten rules. >> martin: he told webb black airmen have to abide by unwritten rules which don't apply to their white counterparts. what are some of the unwritten rules? >> holland: like, change your posture when you walk into the room. >> martin: change your posture? >> holland: yeah, so, i'm 5'11, right, 220 pounds. a black big guy is scary and threatening. so you strip those things away from you to make people feel comfortable with you. >> martin: what are some of the other things you have to strip? >> holland: voice, right. voice, you don'