Is this reverse discrimination?

Please, serious answers for this one! Ok, I work at facility that houses boys 7-17 with behavior and mental difficulties. I am the 3rd shift supervisor. I've been at my job for almost 10 years. I work 3rd shift. Our building is divided into 2 units. A younger unit and an older unit. I work on the younger unit and have for pretty much the last 9 years. Recently my employer hired a young female to be my istant supervisor. She works on the older unit. Well, we recently got a 15 year old juvenile delinquent who acts out horribly. Said juvenile is on my istant supervisor's unit. So, being that she is young, somewhat small ( 5'5 130) and female she is scared of the new juvenile. Staff on her unit are just an inconsistent mess! So, to get to my point, my boss is making me work on that unit due to all the behaviors on that unit and putting her in my place on the younger unit! We literally have to wrestle these kids down at times if they are a danger to themselves or others. I feel I'm being discriminated against because I am a big male who can physically handle these juveniles, but would rather not. The only reason they want me on that unit is so my istant supervisor feels comfortable! I know I'm getting screwed but am I also being discriminated against? Thanks! Jack