Flipping Marine Corps Lance Cpl. German Diaz and Egyptian Olympian Mostafa Hassan practice different techniques at Marine Corps Stone Bay Gym at Camp Lejeune North Carolina, Aug. 20, 2018. Hassan is a 2008 Olympian and was providing professional experience and tips to the team. SHARE IMAGE: Download Image: Full Size (1.39 MB) Photo By: Marine Corps Photo by LCpl. TarynEscott VIRIN: 180820-Z-Y5560-002.JPG Photo Gallery