Respuesta :
Answer:
Department of Homeland Security
Explanation:
Department of Homeland Security functions to secure the nation from threats and works in field of cybersecurity, border security, chemical facility inspector and emergency responses.
The Joint Staffs is composed to advise president and secretary of defense on military matters.
The Chairman of the Joint Chiefs of Staffs (CJCS) is functions to advise president, secretary of defense, and other three players of National security council on Military matters.
Department of Defense functions to stop war and provide defense to the country .
Answer: Combatant commanders is the correct answer
Explanation:
