Seaman Valentin Zherelyev, a corpsman with Marine Fighter Attack Squadron (All Weather) 225, moves an old concrete slab for Earth Day near Marine Corps Air Station Miramar, Calif., April 22. Marines and Sailors also picked up litter near the roads. - Seaman Valentin Zherelyev, a corpsman with Marine Fighter Attack Squadron (All Weather) 225, moves an old concrete slab for Earth Day near Marine Corps Air Station Miramar, Calif., April 22. Marines and Sailors also picked up litter near the roads.