The decimated planet in the "GoLion" episode "Goodbye, Earth" this was based on was Earth - also the war-destroyed world shown in the pilot where the quintet of space-explorers was captured, rather than Arus. Also, the shooting was not a military salute but an aim to kill for desertion.
The first time Hunk used the nickname Chief on Keith. "Chief" was his GoLion counterpart's nickname.