Amtrak is working hard on tunnels old and new Manhattan: Re “Amtrak’s Sandy failure” (editorial, Oct. 31): Amtrak knows all too well the fragility and importance of the century-old North and East River Tunnels. It’s why we have spent years advancing rehabilitation projects that are poised to begin construction. In the years since Superstorm Sandy, with dedicated Amtrak employees working in the tunnels nearly every night to keep them open and safe for service, we and our partners built the first two sections of a new tunnel under Hudson Yards. We also acquired property for the new Hudson River Tunnel’s…