Whether you are telling a story or solving a problem at work, the five Ws $($and H$)$ are questions essential to information gathering. Communication can be incomplete without answering those questions. Below is a news story that is missing one of the essential questions. Indicate which of the $5$ Ws is missing.

Glasstone fire crews responded to a wildland fire. The fire was located just north of I$-90$ near the Tow Path Road exit. When crews arrived, they found the fire to be an acre in size with a moderate rate of speed. Crews quickly established a water supply and built a perimeter. They worked to put out the fire and kept the spread to a minimum. The cause of the fire is under investigation.