"The Target Is 555 Meters" is the 148th episode of the Red Jacket series. It aired on August 18, 1980.
The Marine Tower Observation Room is essentially a safe room floating in midair, accessible only by a single see-through elevator. Lupin and co. plan to raid the annual diamond auction, which is being held in the room itself. The success or failure of this job depends on Jigen's precise long-range marksmanship, but will he be up to the challenge?