Courage is a cultural phenomenon which means it has cultural context, connotations and cultural conclusions. A robber invading a house is culturally inappropriate and receives no cultural compliments even though if you wish to do the same, you may consider that it may take you a little "courage". A feat attempted ( notice I am not saying accomplished) which is beyond usual human behavior and endeavor in those given circumstances and hailed heroic/beneficial by a culture (s). Would be what I call courageous. It must be beyond usual human endeavor and benefit a society, community and culture. That is courage.
Atta was a common criminal, if he did what the govt says he did.