Anyone who has the personality can be a good manager.I dont because I want to slap the stupid out of some people.You do have to be understanding and firm at the same time.If you have worked on a lift,car or what have you.Makes no diffrence.Then you need judgment, is this right or wrong.The best manager I ever worked for was ex army.He made the call told you what to do and if all heck broke loose he stood there and said I said it and took heat for it.A good people person is what it takes.