The New York City Police Department is once again revising protocol for the way officers respond to structural fires.
An internal memo was issued Friday saying police officers must take the stairs and avoid using elevators.
It replaces one distributed earlier this month instructing officers to take the elevator no closer than two floors beneath a fire and to exercise caution.
These changes come in the wake of Officer Dennis Guerra's death on April 6.
He was overcome by smoke and carbon monoxide as he got off the elevator on the 13th floor of a Brooklyn high-rise.
Guerra's partner, Rosa Rodriguez, was also overcome by smoke and is still recovering in the hospital.
Marcell Dockery, 16, is accused of setting the fire.
He is charged with second-degree murder.