Master Sgt. Erica Jasper, 779th Medical Group, NCO in charge of Emergent Care gives directions to medical technicians Senior Airman Jessica Seaborn and Airman 1st Class Maiky Rodriguez, and Hospital Corpsman 1st Class Obi Nwagwu during Joint Service Open House May 18 at Joint Base Andrews, Md. This year's Joint Service Open House celebrates the Centennial of Marine Corps Aviation. JSOH affords the public an opportunity to meet the men and women of the Armed Forces while viewing over 100 static displays and 19 aerial demonstration teams. (U.S. Air Force photo by Melanie Moore)