Federal investigators say the Boston Fire Department bears some responsibility for the deaths of two firefighters who died battling a blaze in a brownstone two years ago.

The report by the National Institute for Occupational Safety and Health says a lack of training to fight wind-whipped fires, inadequate staffing, and failure to adequately assess risk contributed to the deaths of Lt. Edward Walsh and Firefighter Michael Kennedy in March 2014.

The federal report released Thursday outlined a series of factors that led to the deadly blaze, including uncontrolled ventilation, a burned-through fire hose and a lack of fire hydrants on a private street.

Fire Commissioner Joseph Finn, who was incident commander that day, said "we're not hiding a thing" and he has already boosted training based on the fatal fire.