Sgt. 1st Class Jonathan Gibson, 3rd U.S. Infantry Regiment Sergeant of the Guard, carries a wreath during the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. President Donald J. Trump, Secretary of Defense James N. Mattis, and Maj. Gen. Michael L. Howard, Joint Force Headquarters-National Capital Region and U.S. Army Military District of Washington commanding general hosted the ceremony (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

A child watches as a 3rd U.S. Infantry Regiment relief commander and sentinel participate in a Changing of the Guard ritual prior to the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. The guard is changed every hour from Oct. 1 to March 31 and every half hour from April 1 to Sept. 30. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

The U.S. Air Force Honor Guard stands in formation during the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. The ceremony, held to honor the America’s fallen service members, began after a 21-gun cannon salute announced the president’s arrival and was followed by the national anthem, the wreath-laying, the playing of “Taps,” and a moment of silence. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

U.S. Air Force 1st Lt. Vincent Ramsey, standard and evaluations flight officer in charge, stands at ceremonial parade rest during the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. The ceremony, held to honor the America’s fallen service members, began after a 21-gun cannon salute announced the president’s arrival and was followed by the national anthem, the wreath-laying, the playing of “Taps,” and a moment of silence. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

President Donald J. Trump participates in the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. The ceremony, held to honor the America’s fallen service members on Memorial Day, began after a 21-gun cannon salute announced the president’s arrival and was followed by the national anthem, the wreath-laying, the playing of “Taps,” and a moment of silence. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

Secretary of Defense James N. Mattis arrives at the Tomb of the Unknown Soldier during the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. The ceremony, held to honor the America’s fallen service members, began after a 21-gun cannon salute announced the president’s arrival and was followed by the national anthem, the wreath-laying, the playing of “Taps,” and a moment of silence. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

The official party of the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony departs the Tomb of the Unknown Soldier at Arlington National Cemetery in Arlington, Va., May 28, 2018. President Donald J. Trump, Secretary of Defense James N. Mattis, and Maj. Gen. Michael L. Howard, Joint Force Headquarters-National Capital Region and U.S. Army Military District of Washington commanding general, hosted the ceremony. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)

Members of various military honor guards stand at the Tomb of the Unknown Soldier during the 150th Presidential Armed Forces Full Honor Wreath-Laying Ceremony at Arlington National Cemetery in Arlington, Va., May 28, 2018. The ceremony, held to honor the America’s fallen service members, began after a 21-gun cannon salute announced the president’s arrival and was followed by the national anthem, the wreath-laying, the playing of “Taps,” and a moment of silence. (U.S. Air Force photo by Staff Sgt. Jordyn Fetter)