Family, friends and colleagues are preparing to say their final goodbyes this week to fallen firefighter Timothy Klein, who died while fighting a fire in Brooklyn Sunday.

Klein was a member of the FDNY for six years and made a huge impact in that time. Klein, 31, was one of many firefighters who rushed to the scene on Avenue N in Canarsie to try and put out a fire at a residential home. As the flames spread quickly, the second floor gave out - collapsing on Klein and several other firefighters inside. Five firefighters were hurt, and 21-year-old Carlos Richards was also killed.

MORE: Families, community remember firefighter and Brooklyn resident killed in fire

A wake for Klein will be held at McManus Funeral Home Thursday. The viewing hours are 2 p.m. to 4 p.m. and 7 p.m. to 9 p.m.

Those who knew him say he was a true hero who died doing a job he loved.

"He had a positive impact on every person that he met," says Keith Klein, Timothy's cousin.

Klein leaves behind a mother, three sisters and his father, who is a retired firefighter.

A funeral Mass will be held for Klein on Friday at St. Francis de Sales in Belle Harbor at 11 a.m.