People forget that when the doors shut on a shipping container, that it is designed to seal out an accidental dunking in the ocean. Every one that I have personally seen has a robust seal all around the doors.

If Biden catches wind of killer drones, programmed to search out vaccinated people, hidden inside even a few shipping containers, I have no doubt that he will order them all back to China, to teach them a lesson by denying them the money that would have been sent back to China, when the contents of all those containers are sold in stores in the USA.