Are they guilty?
That depends on whether immoral acts have been committed. I will try to show in later posts just how they are guilty.
Obviously *some* actions by *some* arms companies will have a moral justification at some level. However I believe that a large proportion of the work of arms companies is morally unjustifiable, and that the people who own, manage, and work in, arms companies either 1) know they are guilty of immoral behaviour or, 2) believe that they are innocent of immoral behaviour, largely due to ignorance of moral behaviour, or their own refusal to examine their own actions in the light of an acceptable moral code.