Crossword puzzle clue "they get their start underground"

They get their start underground

They got their name from their hibernation

They might help get you into more underground stuff

Crack commando unit sent to prison by a military court for a crime they didn't commit, before escaping to the Los Angeles underground where today, still wanted by the government, they survive as soldi

Where baseball stars get their start

Where many directors get their start

How polka bands get their start?

They get their man