Petty Officer 1st Class James G. Ping, a corpsman with Fox Company, 2nd Battalion, 2nd Marine Regiment, shows Afghan national army soldiers with the 6th Kandak, 3rd Brigade, 205th Corps, how to properly use a nasal nasopharyngeal airway during a basic medical class at Combat Outpost Sharp, in Garmsir District, Helmand province, Afghanistan, March 10. The corpsmen taught the ANA soldiers how to control bleeding, maintain breathing, and administer intravenous fluids.