Fallen firefighters honored at national ceremony

More than 100 names of firefighters who were killed in the line of duty have been added to the National Fallen Firefighters Memorial in Maryland.

Among the 107 firefighters honored were 19 Arizona firefighters killed in a 2013 canyon fire and 10 first responders killed in a fertilizer plant explosion in Texas last year.

Ninety-eight of the firefighters honored died in 2013.

Nine died in previous years.