Robot lifeguard patrols California's beaches

Emily is a remotely operated device that can be deployed from various locations, such as a beach, boat, or helicopter. It travels at approximately 25 mph and can assist up to four people in staying afloat. Emily is equipped with a camera and speaker for communication, and future versions may include sonar to detect people underwater.

What are the possible methods of deploying the device mentioned in the text?

At what speed can the device travel?

How many people can the device help to stay afloat?

What additional features can Emily be equipped with?

What future capabilities could the device have to assist in locating people?