It's called a SOIA, or Simultanious Offset Instrument Approach. Basically, it's like the ILS PRM found at MSP
, but instead uses an LDA, or LDA PRM -- to be precise.
One aircraft flies in on the ILS, while another is following an LDA, or Localizer-type Directional Aid, which is basically an offset ILS. What this does, is sets up a multiple approach to where both aircraft come in, with the LDA aircraft lagging the ILS aircraft, as the LDA aircraft can identify the ILS aircraft better. After a missed approach fix, if the aircraft is not in visual conditions, or has the ILS aircraft in sight, then an missed approach is called; otherwise, the aircraft will deviate from the LDA to align visually with the runway.
Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.