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"HQ, this is Nord do you copy?" Dr. Nord spoke into the microphone.. He tapped away at various buttons and waited a few moments.
"Guess I am stuck here for another day," Nord said as he hung his head.
  Two days ago, a snow storm had hit the research bunker he was working in. The howling winds had battered against the walls of the bunker for hours, while snow had piled up and threatened to cover the bunker completely. Dr. Nord had stayed safely inside the research bunker. No matter how deafening the wind became or how hard the snow seemed to slam in the bunker, Dr. Nord remained calm. He knew that the bunker could withstand anything that the harsh weather could throw at it.
  While the bunker stayed perfectly fine, the communications tower had been lost. Dr. Nord wasn't worried though. He knew someone would come looking for him.
In the second paragraph, the phrase"hung his head" shows that Nord is-
How does Nord feel about having lost all communication?
What is the most likely setting of the passage?
In the first sentence, Nord says "Do you copy?"Â What does this phrase help readers understand?