A Marine stationed at a South Carolina base was shot dead by another Marine, officials say. The victim has been identified as Tyler Wallington of Standish, Maine. The 21-year-old was an aircraft ordnance technician with Marine Fighter Attack Training Squadron 501 (VMFAT-501) and was stationed in Beaufort, S.C. The suspect — 21-year-old Cpl. Spencer T. Daily — was also an aircraft ordnance technician with the training squadron.