Submarine Rocket) from  their forward MK 16 Launcher. Almost immediately its asked if they  can abort it. First ASROCs are not fired from the Bridge. The Bridge  only give the permission to fire via a key as turned by the Captain  (his key and he holds it). Once fired, ASROCs cant be exploded as  there are no communications from the ship to the missile. Shooting  it down is virtually impossible because of the speed of the ASROC as  well as the size (about 21" in diameter).