"Be Careful," "Step Up," and "Step Down" are new commands that we're trying to teach Bronte.
"Be Careful" is used when Bronte is close to running into something with his head. "Step Up" and "Step Down" are used when we're walking (he is walked with a hand on the harness for maximum control in tight places) and he encounters a step.
This morning Bronte ventured off of the safe zone carpeted area in the barn and found one of his toys.
Any indication that he's gaining confidence is a good sign.