Simplify the following text for a Grade 13 native English-speaking person.
Original: The CSEC is accountable to the Minister of National Defense through two deputy ministers , the National Security Advisor to the Prime Minister is responsible for policy and operations while the Deputy Minister of National Defense is responsible for administration .
Simplified: The CSEC is reports to the Minister of National Defense through two deputy ministers , one of whom is responsible for Administration , the other Policy and Operations .