I had a child in the preschool I worked at who progressed through the same thing, then it moved on to Vikings with their ships and such, Western frontier exploration, etc. His mom, bless her heart, to him to every exhibit in the city and checked out books in the library about his current interests. I don't think it has to do with the violence, but with the idea and the engineering. It can be a starting point for all kinds of other ideas and stories that are more...constructive, instead of destructive,you know? History, diplomacy, medicine (how do you counteract some of the effects?), geography, materials. I do think it's a boy thing.
