How China or Russia Could Trick a U.S. Spy Satellite
See the pretty Honda Civic in the photograph?
It's not really a Honda Civic. It's a Russian tank pretending to be an automobile.
See the American spy satellite? A computer analyzes its images, but the computer can be fooled by clever camouflage.
This is why the U.S. Navy wants to understand how to prevent computerized surveillance systems from being suckered into thinking that tanks are passenger cars.