The death of eight firefighters in a tragic helicopter accident will have many referring to it as one of the worst tragedies for firefighters in the last 25 years, with the last being Charleston’s sofa store blaze.

The helicopter crash that is believed to have killed eight firefighters Tuesday would rank among the deadliest incidents involving firefighters in the U.S. in the past 30 years.

Other notable dates involving firefighter deaths:

_ Sept. 11, 2001: 340 firefighters killed in World Trade Center attack.

_ July 6, 1994: 14 firefighters overcome by wildfire near Glenwood Springs, Colo.

_ July 23, 1984: 10 firefighters killed fighting oil refinery blaze in Romeoville, Ill.

_ June 18, 2007: Nine firefighters die when the roof of a burning furniture warehouse collapses in Charleston, S.C.

_ Aug. 24, 2003: Eight Oregon firefighters returning from a fire in Idaho die when their van collides with a truck outside Vale, Ore.

Source: National Fire Protection Association