More like:

  Your Honour, it is indeed correct that during testing of our new missile to see if it could correctly function in the military role of seeking out and then breaking through a blast door, the targeting system locked onto the nearby bank vault. We only found out where this particular missile went after the bank contacted us for help in investigating who might have been responsible for the new hole where their door used to be, and if any of our other equipment might help stop such weapons in the future.

  We did not expect the test missile to be so effective.

  We have contacted independent researchers to help us investigate what went wrong here.

  We also agree that we made a lot of mistakes, and that we should have had better tests in place even at the time.

  However, we also assert that even if we had had all of those tests in place, the specific actions taken by our "autonomously seek-and-destroy-blast-door" munition would likely have circumvented all the things we could have, and should have, already had in place.