Which of these successful consumer products was originally developed as part of a NASA space program before becoming a commercial success?

How well do you know government initiatives that became successful consumer products? Many everyday items we use originated from government research or public sector development before becoming commercial successes. This trivia tests your knowledge about products that transitioned from government projects to household names. Can you identify which development correctly matches its government origin?

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Memory foam, initially created to improve crash protection and comfort for airline pilots and passengers
Teflon coating, developed by the Department of Defense as a heat shield for military vehicles
GPS technology, originally created by the Department of Agriculture to track crop yields across large farming regions
Microwave ovens, developed by the National Institute of Standards and Technology as a food preservation method