Technology does not replace a hands on search, but enhances your effectiveness. There is no substitute for physically covering an assigned area. Obtaining video from the air gives you another layer of coverage. Different angles, less risk to searchers, tremendous speed and the ability to review the video even frame by frame if necessary greatly increases probability of detection.
While we were flying this canyon today I thought...wow...when I was a kid we flew balsa wood airplanes with a rubber band...now we have the tools that took this video.