68W
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68W is the Military Occupational Specialty for the United States Army's Combat Medic. 68Ws are primarily responsible for providing emergency medical treatment at point of wounding on the battlefield,
A U.S. Army 68W "Combat Medic Specialist" (center-left, viewers right) in Afghanistan. Note that the only distinguishing feature is the medical pack on his back.
Physician assistant
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A physician assistant or physician associate is a type of non-physician practitioner. While these job titles are used internationally, there is significant variation in training and scope of practice
Physician Assistant Program at ODU
Physician Assistant in the US Army