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The USAR task environment programmed in MATRX. It shows a victim underneath a pile of rocks, and a human and a robot representing the team members. The dashed red square (above the human’s head) represents the hand of the human that can be moved to pick up rocks. The dashed blue square represents the hand of the robot. Scene (A) was used as level 1 in the experiment, while scene (B) was used as level 2.
