This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
US Navy NVN Hospital Corpsman nd Class Robert Carroll receives instruction to fire one shot from . caliber machine gun from Avi. en ARABIAN SEA Oct Hospital Corpsman nd Class Robert Carroll receives instruction to fire one shot from caliber machine gun from Aviation Ordnanceman Airman Justin Fortuna during qualifications aboard