Training footage
Take a look at this video of Echo carrying out a search training exercise. Mike Dewar is Echo's handler and he is filming the training exercise and you can hear him shout the commands of 'find' behind the camera to Echo. Half way through the video Mike stops Echo by shouting 'down' and 'wait' and resumes the search by shouting 'free'.
Watch a video of Echo training (Windows Media/Audio File 5,290 KB)