Mounted Weapon A Marine stands watch with a .50-caliber mounted weapon in an all-terrain vehicle in Sweden, March 21, 2019, during Northern Wind, an exercise that focuses on increasing interoperability between Marines and NATO allies and partners. SHARE: Download: Full Size (0.85 MB) Tags: Marine Corps Credit: Marine Corps Lance Cpl. Menelik Collins VIRIN: 190321-M-PR541-830C.JPG Photo Gallery