Answer: redoctober

AnswerCrossword Clue
REDOCTOBERClancy's "The Hunt for ..."
REDOCTOBER"The Hunt for ...," Clancy novel
REDOCTOBERObject of a hunt in a 1984 best seller
REDOCTOBERSubmarine in a Tom Clancy best seller
REDOCTOBERClancy's hunted submarine