RIPSNORT!!!!!!!!!!!
Got your attention?
OK, I first saw an arestor hook on a USAF Delta Dagger interceptor. Why do Airforce fighters have arestor hooks? Emergencies. Specifically in Alaska.
During the cold war we posted air defense units up north in Alaska and Canada. The North Pole is actually the shortest route for the USAF and the Red Airforce to nuke each other with bombers.
It also has lots of ice and snow. Ever land a plane on an icy runway and stop using only wheel brakes? It isn't pretty. Thus, the Airforce borrows technology from the Navy and uses arestor wires out on the runoff ends of the runways...just in case. Normally you never use them. But what if the fighter pilot can't stop on a windswept runways full of blowing snow? The USAF can NOT be stopped by the weather. Period. If it can be, the Russians could attack during a blizzard and our fighters couldn't get off the ground.
You also save machines and men during peace time, which is all the Cold War was.