I like that in old Superman comics he would use one of these giant arrows as a key to the fortress of solitude. Only someone with super strength could gain entr

I like that in old Superman comics he would use one of these giant arrows as a key to the fortress of solitude. Only someone with super strength could gain entry. At the time I first read a reprint of an old Superman with the aircraft arrow they had probably been obsolete for decades, which like English police boxes just seems to make them more magical.