This paper analyzes the operational skill for the search activity via a remote-controlled mobile robot to find out some hidden objects under debris. The experiments revealed that the skillful (i.e., both accurate and effective) operations require the adequate view control of the camera, which enables the parallel execution of the robotic ambulatory movement and the accurate environment recognition, ensuring the necessary perceptual resources. We also discuss some system properties required to realize the effective ``shared'' control with the machine-automation for human supports based upon another experiment after the analysis.
