"Suppose, I said, a couple of you students, Jason and Sarah, were walking to McDonald’s after dark. And suppose a man with a knife jumped out of the bushes and threatened you. And suppose Jason knows that Sarah has a black belt in karate and could probably disarm the assailant better than he could. Should he step back and tell her to do it? No. He should step in front of her and be ready to lay down his life to protect her, irrespective of competency. It is written on his soul. That is what manhood does.
And collectively that is what society does—unless the men have all been emasculated by the suicidal songs of egalitarian folly. "
- John Piper, writing on Co-ed Combat and Cultural Cowardice (http://www.desiringgod.org/ResourceLibrary/TasteAndSee/ByDate/2007/2475_Coed_Combat_and_Cultural_Cowardice/)