It's curious that the same Wiki-piece you quote from also reports the following:
"...At 4:30 a.m. on April 12, 1861, Lt. Henry S. Farley, acting upon the command of Capt. George S. James,[26][27] fired a single 10-inch mortar round from Fort Johnson.
"(James had offered the first shot to Roger Pryor, a noted Virginia secessionist, who declined, saying, "I could not fire the first gun of the war.")
"The shell exploded over Fort Sumter as a signal to open the general bombardment from 4003 guns and mortars at Fort Moultrie, Fort Johnson, the floating battery, and Cummings Point.
Under orders from Beauregard, the guns fired in a counterclockwise sequence around the harbor, with 2 minutes between each shot..."
This source says: "The next morning, at 4:30 a.m., Confederate batteries opened fire on Fort Sumter and continued for 34 hours.
The Civil War had begun!"
And that may, finally suggest an explanation here.
Where Wiki says, "4003 guns and mortars", this source says "43 guns in a ring".
If 43 is correct (and it does seem more realistic), then perhaps that figure of 4003 is just a typo, somehow adding zeros where they don't really belong.
It would not be the first mistake uncovered by these Civil War threads.
;-)
ROFL.
This entire Civil War thread has been an exercise in advancing blatant historical revisionism and one monumentally insane "mistake" after another.
Btw -- "Pea Brain"?
*smh*
I'll refrain from the obvious: "BroJOKE." Because anyone who makes analogous, #Fort Sumter = Pearl Harbor; #The Confederacy = WWII Japan needs to contact the Mother Ship. Bones McCoy needs to examine you :-) ;-)