ExecOrder 1:2017-5.  

Executive Order 2017-5  
I, Mary Fallin, Governor of the State of Oklahoma, pursuant to the authority vested in me by Section 90.11 of Title 25 of the Oklahoma Statutes, in recognition of Vietnam Veterans Day, direct that appropriate steps be taken to fly all American flags and Oklahoma flags on State property at half-staff from 8:00 a.m. until 5:00 p.m. on Thursday, March 16, 2017, to honor the many sacrifices made by the men and women of Oklahoma and the United States during the Vietnam War.
Vietnam Veterans Day is a day to honor all the veterans who served in Vietnam, Cambodia, or Laos during the Vietnam War. The flying of these flags at half-staff is a symbol from Oklahomans that we remember all those who fought in the Vietnam War, especially those who were killed, and demonstrates our sympathy for their families.
This executive order shall be forwarded to the Division of Capital Assets Management who shall cause the provisions of this order to be implemented by all appropriate agencies of state government.
IN WITNESS WHEREOF, I have hereunto set my hand and caused the Great Seal of the State of Oklahoma to be affixed at Oklahoma City, Oklahoma, this 13th day of March, 2017.
Mary Fallin
Tod Wall
Secretary of State
[Source: Added at 34 Ok Reg 458, eff 3-13-17]