As we were heading back home, a police car had pulled over next to the bus and talked to Juan Carlos. The police had informed him that there was a rock stuck in between the tires and we needed to get it out before it flew out and could potentially severely hurt someone. Therefore, Juan Carlos and Omar tried to get the rock out of the wheels. They tried everything, even pulling the bus over another rock and elevating the bus to see if it would work. It seemed pretty dangerous that the bus was going to fall off the rock and Juan Carlos was under the bus at this time. It was great how they were both laughing, despite the situation. Thus, we went to the garage and there was a technician there and he was able to loosen the wheel and get the rock out from between the wheels!! The rock was huge!! It was about 5 inches in diameter, the long way. I was wondering how a rock got in there. Luckily, the rock was taken out!!