A child was shot while riding a bike in Jacksonville, Fla., Sunday afternoon. Trevor Patrick Clark, 15, was killed when a gun carried by another teenager discharged in Morrow County, Ohio, Sunday morning. A 16-year-old boy was wounded when a 14-year-old boy opened fire with a single-barrel shotgun following an argument in Spindale, N.C., Sunday afternoon. A drive-by shooting in the Orange Mound area of Memphis, Tenn., left a 19-year-old in critical condition early Sunday. A 21-year-old man was fatally shot while being shown a gun that fell and accidentally fired in the Bay Ho neighborhood of San Diego, Calif., early Sunday.