PHOTOS: 5 years ago, deadly Metro fire hits DC

Smoke fills a Washington Metro system subway car near the L’Enfant Plaza station in Washington, Monday, Jan. 12, 2015. The transit network in the nation’s capital remained hobbled Tuesday morning after an electrical malfunction that filled the busy subway station with smoke, killing one woman and sending dozens of people to hospitals. (AP/Andrew Litwin)

A firefighter sets up a triage area as people are evacuated from a smoke filled Metro subway tunnel in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP/Jacquelyn Martin)

Metro Transit Police officers secure the entrance to L’Enfant Plaza Station in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP/Manuel Balce Ceneta)

A smoke inhalation victim receives oxygen after passengers on the Metro (subway) service were injured when smoke filled the L’Enfant Plaza station during the evening rush hour January 12, 2015 in Washington, DC. Smoke filled the Washington subway station, forcing the evacuation of startled passengers and forcing afternoon rush-hour commuters to find other ways to get home. (PAUL J. RICHARDS/AFP via Getty Images)

Metro Transit Police officers secure the entrance to L’Enfant Plaza Station in Washington, Monday, Jan. 12, 2015, following an evacuation. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP/Manuel Balce Ceneta)

A man coughs and spits as he is evacuated from a smoke filled Metro subway tunnel in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP/Jacquelyn Martin)

An FBI Medic, center, helps people onto a bus after they were evacuated from a smoke filled Metro subway tunnel in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP/Jacquelyn Martin)

FILE – In this Jan. 12, 2015 file photo, a woman is transported in a wheelchair onto an ambulance as people are evacuated from a smoke filled Metro subway tunnel in Washington. Passengers on a smoke-filled subway train in the nation’s capital were still asking when help would arrive 27 minutes after the smoke was first reported, District of Columbia officials said Thursday. One woman died and dozens more were sickened when the train filled with smoke Monday afternoon near a busy station in downtown Washington. The cause of the electrical malfunction that led to the smoke remains under investigation. (AP/Jacquelyn Martin)

Metro Transit Police officers, secure the entrance to L’Enfant Plaza Station in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. (AP/Manuel Balce Ceneta)

FILE – In this Jan. 12, 2015, file photo, a firefighter attends people on a bus to assess triage needs after people were evacuated from a smoke filled Metro subway tunnel in Washington. Federal transportation safety officials will be gathering information about a fatal malfunction on Washington’s subway system during a rare investigative hearing. One woman died and more than 80 others were sickened by smoke after an electrical malfunction in January caused a train to fill with smoke while it stopped in a tunnel in downtown Washington. (AP/Jacquelyn Martin)

A Washington, DC, firefighter assists a woman to medical aid after she became stuck with other passengers on the Washington Metro service January 12, 2015, after smoke filled the L’Efant Plaza station during the rush hour. The L’Enfant Plaza metro station in downtown Washington was temporarily closed on Monday after a fire filled the station with smoke, the Washington Metropolitan Travel Authority said in a release. Metro Transit Police and fire department personnel were at the station examining the problem, WMATA said, but had not yet found the source of the problem. (AFP via Getty Images/PAUL J. RICHARDS)

A Metro Transit Police officer walks up the escalator at L’Enfant Plaza Station in Washington, Monday, Jan. 12, 2015, following an evacuation. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP/Manuel Balce Ceneta)

FILE – In this Jan. 12, 2015 file photo, firefighters begin to remove cones from the scene after people were evacuated from a smoke filled Metro subway tunnel in Washington. Federal investigators say Washington’s Metro transit authority did a poor job using ventilation fans to push smoke out of a subway tunnel during a fatal accident last month. The National Transportation Safety Board issued recommendations on Wednesday urging Metro and other transit networks nationwide to improve their ventilation procedures during smoke or fire events. (AP/Jacquelyn Martin)

Burnt traction power cables are displayed in the Materials Laboratory at the National Transportation Safety Board in Washington, Thursday, Feb. 12, 2015, from the tunnel where the Jan. 12 electrical arcing and smoke event occurred in the Washington Metro subway where a woman died. (AP/Cliff Owen)

A burnt traction power cable which was melted in half is displayed in the Materials Laboratory at the National Transportation Safety Board in Washington, Thursday, Feb. 12, 2015, from the tunnel where the Jan. 12 electrical arcing and smoke event occurred in the Washington Metro subway where a woman died. (AP/Cliff Owen)

U.S. National Transportation Safety Board Chairman Christopher Hart, second from left, accompanied by accompanied by Rail Safety Division Investigator Rob Gordon, left, speaks to members of the media following a National Transportation Safety Board meeting into the probable cause of the Jan. 12, 2015 Washington Metropolitan Area Transit Authority Metrorail accident near the L’Enfant Plaza in Washington, Tuesday, May 3, 2016. (AP/Andrew Harnik)

A time-lapse video showing smoke inside the L’Enfant Plaza station is displayed as members of a safety oversight group deliver a presentation on the probable cause of the Jan. 12, 2015 Washington Metropolitan Area Transit Authority Metrorail accident near the L’Enfant Plaza during a National Transportation Safety Board meeting in Washington, Tuesday, May 3, 2016. (AP/Andrew Harnik)

A list of injuries is displayed as members of a safety oversight group deliver a presentation on the probable cause of the Jan. 12, 2015 Washington Metropolitan Area Transit Authority Metrorail accident near the L’Enfant Plaza during a National Transportation Safety Board meeting in Washington, Tuesday, May 3, 2016. (AP/Andrew Harnik)

U.S. National Transportation Safety Board Chairman Christopher Hart, center, accompanied by accompanied by Rail Safety Division Investigator Rob Gordon, right, speaks to members of the media following a National Transportation Safety Board meeting into the probable cause of the Jan. 12, 2015 Washington Metropolitan Area Transit Authority Metrorail accident near the L’Enfant Plaza in Washington, Tuesday, May 3, 2016. (AP/Andrew Harnik)