It wouldn't have to have a port. The US has had radio programmed artillery shells for a long time so using the same tech to set and arm bombs isn't a stretch.
These are just proximity fuses. I can find no reference to actual communication with in-flight artillery shells. Furthermore Nuclear Artillery shells were armed when loaded. They were one of the few systems outside of the two-man rule. As a single inferior officer would arm the shell when loading it.
These are just proximity fuses. I can find no reference to actual communication with in-flight artillery shells. Furthermore Nuclear Artillery shells were armed when loaded. They were one of the few systems outside of the two-man rule. As a single inferior officer would arm the shell when loading it.