Platoon Call Marine Corps 1st Lt. Harry J.D. Walker yells to his platoon while taking simulated fire during Korean Marine Exchange Program 17-14 in South Korea, Aug. 11, 2017. The program enables U.S. and South Korean marines to focus on exchanging tactics and procedures and increasing interoperability. Marine Corps photo by Cpl. Aaron S. Patterson SHARE: Download: Full Size (0.58 MB) Credit: Cpl. Aaron Patterson VIRIN: 170811-M-QH615-099C.JPG Photo Gallery