Arlington National Cemetery averages upwards of 30 funerals per day.
Present at every one of those is a woman escorted by a member of the service honor guard who bows to the grieving, hands them two notes, and is escorted away.
Kristin Webber-Moore receives a card of condolence from Arlington Lady Paula McKinley, right, during the graveside service for her father in Arlington National Cemetery, Sept. 22, 2016, in Arlington, Va. Her father, U.S. Navy Capt. Kent S. Webber, was buried in Section 60. (U.S. Army photo by Rachel Larue)
The notes include an official one from the service Chief of Staff and his wife – and a handwritten note from the woman herself.
She is what's known as an "Arlington Lady," officially representing the Chief of Staff and dedicated to the families of those who served. She's not there to grieve, but to honor the fallen.
Since 1948, these ladies have attended every military funeral at Arlington to ensure that "no Soldier, Sailor, Airman or Coast Guardsman is buried alone."
Army Arlington Lady Anne Lennox and her Old Guard escort salute as Taps is played and Brig. Gen. Henry G. Watson, the "father of the Fife and Drum Corps," is laid to rest at Arlington National Cemetery, May 14, 2014. (U.S. Army photo by Spc. Cody W. Torkelson)
After World War II, Air Force Gen. Hoyt Vandenberg would attend Arlington funeral services with his wife. The general noticed that many of the funerals were attended only by a chaplain. According to Arlington's website, the Vandenbergs formed a group to ensure a member of the Air Force was present at every airman's funeral.
Slowly, the other branches caught on, creating their own groups. Army Gen. Creighton Adams' wife Julia started the Army's in 1973. The Navy started in 1985 and the Coast Guard in 2006.
The Marines have always sent an official representative of the Marine Commandant to every funeral of a Marine or retired Marine.
"It doesn't matter whether we are burying a four-star general or a private," Margaret Mensch, head of the Army ladies, told NBC News. "They all deserve to have someone say thank you at their grave."
Margaret Mensch, chairwoman of the Army Arlington Ladies, is escorted by an Old Guard Soldier at the burial of Frank Buckles, March 15, 2011. Buckles was the last American veteran of World War I. He died at the age of 110 and was buried with full military honors at Arlington National Cemetery. (U.S. Army photo)
Mensch is married to a retired Army colonel. Many of the Arlington Ladies she organizes are also the spouses of veterans and soldiers.
Some of her ladies joined the Arlington Ladies after being visited by one, because they know first hand the crucial the role these women played when their own husbands died.
Joyce Johnson joined the Army Arlington Ladies in 2004. She lost her husband, Lt. Col. Dennis Johnson in the September 11, 2001, attack on the Pentagon.
"It was a way I felt I could honor my husband," she told Soldiers Magazine. "I just wanted to help make someone else's life better so I asked to join the Arlington Ladies. … It's really an honor to be able to do this."