California National Guard using drone to search for teacher last seen motorcycling in forest

The California National Guard is using a drone to search El Dorado National Forest for a missing San Francisco teacher.

It is the first time the National Guard has used a drone for a search-and-rescue mission.

The California Guard says the drone will collect images in real time, allowing searchers on the ground to make faster, more informed decisions about where to concentrate their efforts.

The search for 45-year-old Edward Kavanaugh has intensified in the 12 days since he went missing. Kavanaugh was last seen July 17 driving a motorcycle on a trail through El Dorado County, about three hours east of the San Francisco Bay Area. He was with another driver before cruising off on his own.

The drone has yet to provide any new leads in Kavanaugh's case.