Beach Attack U.S., Brazilian, Chilean, Colombian, Mexican, Peruvian and Jamaican troops simulate a beach attack in Salinas, Peru, Sept. 28, 2021, during UNITAS, the world's longest-running annual multinational maritime exercise. SHARE: Download: Full Size (0.86 MB) Tags: Marine Corps, Training, UNITAS Credit: Marine Corps Sgt. Hannah Hall VIRIN: 210928-M-YY851-1463C.JPG Photo Gallery