Wheat when it is still attached and dried out can become chometz so it has to be cut before it is fully ripe. The terrorist wanted to hide behind the wheat stalks but it was cut in order they should not become chometz. So they were found.
The Torah gives us advice how to protect ourselves from terrorists. It says when you take over the land don’t do it fast by living the land idle because the wild animals will take over. Don’t leave the land idle without a leader because the terrorists will take over.