U.S. Air Force Airman 1st Class Milton Harrington, left, and Airman Ryan Brooks, heating, ventilation, air conditioning and refrigeration (HVAC) technicians with the 116th Civil Engineer Squadron (CES), Georgia Air National Guard, re-install an outside air duct filter during a preventative maintenance inspection on an industrial HVAC system at the U.S. Embassy in Yerevan, Armenia, May 19, 2016. The Airmen and other members of the 116th CES are in Yerevan for a European Command Humanitarian Civic Assistance project. During the project, civil engineers from the 116th Air Control Wing and a structural craftsman from the 461st Air Control Wing worked in partnership with the Armenian people to renovate a Yerevan elderly institution. The renovation provided crucial skill-set training for the civil engineers while continuing the long-lasting friendship between the Armenian people and the citizens of the United States. Several Airmen from the 116th CES spent time with Armenian workers on U.S. Embassy projects to receive additional career-field training. (Airmen are wearing civilian clothing due to work being accomplished within the civilian population of Armenia) (U.S. Air National Guard photo by Senior Master Sgt. Roger Parsons)