how many years is a term of office for the chief executive?

According to Article 46 the term of office of the Chief Executive is five years with a maximum of two consecutive terms.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

rain drop drop top my name is nick harris and this is my pawn shop