the floridwhere martin died. a candlelight vigil in fort lauderdale where his best friend remembered him. >> reporter: trayvon's death has has demands across the country for zimmerman to be arrested. >>> a family's worse nightmare came true. a father accidentally backed over his child while cutting the grass on his riding mower. the 9-year-old had her foot cut off. the girl is in serious but stable condition tonight at johns hopkins. they have not released the family's name. >>> in baltimore county another tragedy. a 27-year-old army national guard member, who police believe served in iraq was found dead. he is a student at towsend and was found by his roommates inside his apartment yesterday. police don't know how he died but say it wasn't a homicide. state medical examiners office will do an autopsy. >>> another loss for the campus this weekend. a towsend university student is killed by a hit-and-run driver. 20-year-old ryan bailey was walking on york road near washington avenue when a car hit him and pushed hi