Rescuers began searching for the four people on Sunday, after an ATV the four were believed to be riding was found near an entrance.
Special counsel Robert Mueller's office similarly recommended little to no jail time last week, citing Flynn's cooperation with the Russia investigation.
"I would like to apologize ... for her husband dying at my hands," Alvin Braziel Jr. said from the death chamber gurney.
“The Arctic is shouting that something needs to be done," said Rafe Pomerance, chairman of Arctic 21.
The suspected shooter eventually killed himself after an hours-long barricade, officials said.