Tomb of Unknowns: Repair or replace?

A proposal to replace the cracked and weathered white marble monument that crowns the Tomb of the Unknowns at Arlington National Cemetery has stirred up a years-long controversy.

The always-guarded tomb to the nation’s war dead is a potent symbol of sacrifice and patriotism and the above-ground monument, which has cracks running 48 feet around it, is the most visible part of it.