The alidade. Look in the mirror.

He... he... he, uh, found the alidade.

- The alidade... eyepiece that affixes to the center... it's missing.

Who doesn't know what an alidade looks like?

- The Vatican. The alidade is at the Vatican.

All right, we've got exactly 8 hours and 57 minutes to get to Rome, break into the Vatican, get down to St. Peter's tomb, find the alidade.