After the Pearl Harbor bombings, the United States of America went crazy. Of course, they had a reason to. Their prime target was Japan. India was under British rule and China was under the Japanese rule. So the only country the Allied forces could make use of was India. And the closest Indian state to Japan was West Bengal.
So the US Army took numerous plots of land to build airfields so that they can attack Japanese ports and cities any time without spending much fuel. You must not have known about these airfields till now. But if at some point in school, facts about World War II had shocked and fascinated you, you must not miss these two abandoned airfields.