Click on the image to view the movie:

Obstructed reach:  The agent attempts to remove the connectors in the wrong order and can not reach the first connector. 

Out of reach:  The target reach position is out of the agent's range.

Staggered reach:  The final reach position is based on collision detection.

Hazard warning:  Possible contaminants are indicated by green spheres.

Missed step:  The agent attempts to remove the unit before removing the fasteners.

Final Scene:  The final scene where the actions are done properly.

Agent's view:  The final scene from the agent's perspective.