all right. several moments captured our attention this year and shook up our justice system. crimes also shocked us. and trials caused a lot of outrage. ashleigh banfield looks back >> reporter: number ten -- >> we have a report that shots have been fired at the washington navy yard. >> the u.s. navy is telling us three shots were fired. they tell us an active shooter is still inside that building. >> reporter: former navy reservist aaron alexis. a military contractor, gunned down 12 people before police shot and killed him. number 9 -- the mysterious death of 17-year-old kendrick johnson. >> i have questions about the kendrick johnson case. >> i won't discuss that with you. >> why not, sir? >> because our case is closed. >> his body found upside down in