Staff Sgt. Katy McGlone, 89th Airlift Wing flight line protocol NCO in charge and 2nd Lt. Stephan Jenkins, 89th Airlift Wing flight line protocol officer, prepare for a distinguished visitors arrival at Joint Base Andrews, Md., June 22, 2017. These Airmen directly support the president, vice president, first lady, secretary of defense, secretary of state, chairman of the joint Chiefs of Staff, and foreign dignitaries.