Out in 5th Fleet, the Middle East, we used to remind ourselves that we were at the tip of the spear. So much so, that one of our 1st Class Petty Officers used to get real annoyed hearing it. Big mistake. Never vocalize what bugs you. Not in the Navy. We would drop the line, Tip of the Spear, on her at will. (Me less so than her fellow Petty Officers. But I uttered it once or twice.)
Here is one guy who should not us the term. Too close to home. . .