Before I clicked into the article I assumed it was some discovery related to the aftermath of the September 11th attacks. Of course I see now that "pentagon" is

Before I clicked into the article I assumed it was some discovery related to the aftermath of the September 11th attacks. Of course I see now that "pentagon" is not capitalized. It's just that as an American when you put a definite article before the word "pentagon" it conjures a very particular idea.