"Ring Security" Ring Bearers: Mission Impossible Style

I wanted to know some tips to doing a Mission Impossible themed ring bearer entrance. Two boys, one is 2, the other is 5. I like the whole idea of giving them a chance to get their wiggles out before the "boring" part of the ceremony & to include them, thus entertaining them.


Mom suggested getting a cheap combination lock box so they can't lose the "rings" (they're not getting the real ones in that box). I'm thinking give the 2 y/o the simple task of running down the aisle & the 5 y/o the task of "covering" the other boy.
But where in the ceremony should they enter? I considered having an adult hold them back with the DJ & then, after I do my walk, Pastor does a "ring check", cue Mission Impossible theme & ring bearer entrance.
That's MY idea, anyways. Metaphorical penny for your thoughts?