Jim Johnson has picked up on this at some length in his thoughtful post Eliciting Poignancy, reflecting some of my own thoughts about this picture from the NY Times the first time I saw it.
"War Dead Honored On Memorial Day
WeekendARLINGTON, VA - MAY 27: Mary McHugh mourns her dead fiance Sgt. James Regan at "Section 60" of the Arlington National Cemetery May 27, 2007. Regan, an American Special Forces soldier, was killed by an IED explosion in Iraq in February of this year, and this was the first time McHugh had visited the grave since the funeral. Section 60, the newest portion of the vast national cemetery on the outskirts of Washington D.C, contains hundreds of U.S. soldiers killed in Iraq and Afghanistan. Family members of slain American soldiers have flown in from across the country for Memorial Day. (Photo by John Moore/Getty Images)"