Was the Fort in Last Night's "NCIS: New Orleans" Show Fort Jackson or Fort St. Phillip?

Last night, February 23, 2016, "NCIS: New Orleans, Second Chance" the good agents raided a drug-making operation at what was called an old Confederate fort which they located on an aerial map.  It was by a river and the boss said Confederates had built forts for the protection of New Orleans during the war.

It was a large fort and one made of bricks and other masonry, but somewhat in ruins, and, of course, since drugs were being made there, largely inaccessible and obviously not open to the public.

I have to wonder if the drug fort was either Fort Jackson or Fort St. Phillip, downriver from the city?

Just Wonderin'.  --Old B-Runner