2003-2005: MLU Services travels to the State of California to Lake Arrowhead to cut Bark Beetle Infested Trees for Southern California Edison.

During this time, loggers were used heavily in operations of clearing these diseased trees. Billy Ulm realized that the specialized climbers he used during his earlier ice storm missions would improve efficiency. His idea of using these climbers was dismissed by the loggers, but Billy persisted.

As a result of his ingenuity, MLU Services outlasted the other subcontractors on that mountain and specialized climbers have become an integral part of vegetation management in the state.