Short video showing 2 of the 3 CTC boards.
The bottom board (shown first) controls switches and blocks on the main line.
The top CTC board controls switches and blocks in the 3 terminal areas, including the fiddle yard and lead, a long and convoluted wye, industrial trackage, and 2 dedicated engine yards.
The third CTC board is adjacent to the Noralmia Subdivision (Noralmia stands for New Orleans-RALeigh-MIAmi, a station that serves all 3 cities and more).