What is the proper procedure for half-masting the National Ensign?
a. Lower the flag to halfmast by first raising it to the top of the pole
b. Lower the flag to halfmast by keeping it at the midpoint of the pole
c. Raise the flag to the top of the pole, then lower it to halfmast for a specific period of time
d. Fully lower the flag to the base of the pole, then raise it to halfmast