MTA employees using a pump train are working around the clock to pump seawater out of the L train's tunnel under the East River. The tunnel was flooded during the unprecedented 13-foot storm surge of Hurricane Sandy. This photo shows activity on the afternoon of Monday, November 5.

After the tunnel is pumped dry of water, work will begin to inspect tracks, signals, switches, electrical components, and third rail. If any repairs are needed, employees will make them as quickly as possible to get service restored.

Photo: Metropolitan Transportation Authority / Patrick Cashin.