In an image-capturing apparatus, recorded position information is stored upon receiving instruction of storing the recorded position information, and real-time position information is stored upon a photograph is taken, which is stored together with a captured-image. The AED implements a user interface program which guides the rescuer through operation of the AED and application of CPR and defibrillation therapy to a patient by displaying a series of visual instructions on a graphic display or other visual output device, and by providing additional aural instructions via a speaker or other aural output device. The relay apparatus determines whether or not the availability of the converted and forwarded unicast frame by an application is ascertained based on a condition, and prohibits conversion to the unicast frame when the availability is negated.