You've got to do something stealthily. The problem is, the thing you want to do is going to make a lot of noise, and you cannot silence it in any way. What to do? Drown it out with a bigger noise. You can create it yourself, or just wait until something loud happens nearby and make your move then. This follows the same logic as Needle in a Stack of Needles, Lost in a Crowd, and I Am Spartacus, except those are covering up objects and people, not actions. Examples of Cacophony Cover-Up include: