It had only been a matter of time before one of the large crabs decided BD was a good size to steal. Thus Cal's valiant efforts to stop the tiny droid from harassing them. And sure enough.

...

"BD!" He was just about to slow the crab so he could make a rescue when suddenly it was blasted back and BD went sailing out of it's pincer with a long and far too excited whistle.

Cal was torn between exasperation and laughing as the tiny droid used his repulsors to right himself before coming down to the ground. Cal looked to the person who had come to BD's rescue and grinned. "Nice shot."