DOVER AIR FORCE BASE, Del. (AP) — President Donald Trump is attending the dignified transfer Wednesday of four U.S. service members killed in the Middle East.

Trump traveled to Dover Air Force Base in Delaware to be present as the remains of the troops killed in action are returned to their families. The ritual is one of the most somber duties of a commander-in-chief. It will be the third that Trump has attended since he launched the war in Iran in February.

Speaking to reporters on his way to Dover, Trump called it “one of the hardest things to do as a president.” His message to grieving families, he said, will be “we love you, we love your child.”

“There’s no games, there’s no nothing — that’s their child,” Trump said. “And all you can do is throw out your heart.”

Two U.S. Army soldiers killed in Iranian missile and drone attacks in Jordan will be returned during the dignified transfer. The remains of a third service member who is believed to be the soldier missing after the Jordan attacks will also be returned, as well as the remains of a soldier killed in Iraq during a detonation of an Iranian drone.

The soldiers killed in Jordan were identified by the Defense Department as Tyler James Feehan, 25, of Ewa Beach, Hawaii, and Isabella Gonzales, 19, of Carrollton, Texas. The soldier who disappeared after the Jordan attacks and is now believed to be deceased is Angel S. Rampersad, 28, of Ozone Park, New York, the Defense Department said.

The soldier killed in Iraq was identified as Michael Emmanuel Swinton, 30, who lived in Spring Lake, North Carolina.

“We feel very badly, but you know, those great people, those great patriots were out there fighting so that Iran cannot have a nuclear weapon,” Trump told reporters on Sunday. He added that the U.S. was striking Iran “in honor” of the fallen troops.

Trump vows to retaliate for each US death

The U.S. has launched multiple retaliatory strikes against Iran as an interim agreement to end the war falls apart. Trump on Monday said that every time Iran kills an American soldier, “they will pay for that killing many times over!”

Since the war began on Feb. 28, 18 U.S. service members have been killed.

Trump on Tuesday said that while almost all the incoming fire in Jordan was stopped, some made it through.

“They did slip something through in Jordan,” he said. “If we had other operators, you know, it would have not happened, unfortunately.”

He went on: “We’ve stopped almost everything, but when you let other people do your job with the United States — we let other people do the job — and sometimes it doesn’t work out so well.”

Trump did not elaborate on his comments, and it was not immediately clear who he was saying was responsible for protecting U.S. forces in Jordan.

Trump attended two previous dignified transfers since the outset of the war, most recently in March.

During the ritual, transfer cases draped with the American flag and holding the remains of the fallen soldiers are carried from the military aircraft that transported them to an awaiting vehicle to take them to the mortuary facility at the base. There, the service members are prepared for their final resting place.

Soldier had planned to marry fiancee and attend law school

Feehan, a first lieutenant who was killed Saturday, will be posthumously promoted to the rank of captain and awarded the Bronze Star, Purple Heart and Combat Action Badge. He was assigned out of Fort Bragg, North Carolina, to the 32nd Army Air and Missile Defense Command.

Feehan’s family said in a statement that their hearts were shattered by his loss. They remembered Feehan, who went by “Tivo,” as someone who “packed in more living” in his 25 years than most do in a lifetime.

“He chased adventure relentlessly,” the statement said. “He believed deeply in the power of military service, especially what it builds in a person: discipline, leadership, character.”

He planned to marry his fiancee and attend law school after his deployment. The family said they’re starting a scholarship in his name.

Gonzales, who was killed Friday, was a private with the 10th Army Air and Missile Defense Command in Ansbach, Germany. She graduated last year from Hebron High School in Carrollton, near Dallas, school officials said.

Rampersad, a sergeant who was believed to have been killed in Friday's attacks, was assigned to the 57th Air Defense Artillery Regiment, 52nd Air Defense Artillery Brigade, 10th Army Air and Missile Defense Command in Ansbach, Germany.

Swinton, a sergeant who was killed Sunday, will receive a Bronze Star, Purple Heart and Combat Action Badge, and will be promoted to staff sergeant. He enlisted in the Army in 2017 and was assigned to the 55th Air Defense Artillery Regiment, 108th Air Defense Artillery Brigade, out of Fort Bragg, North Carolina.

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Binkley reported from Washington. Associated Press writer Michael Catalini contributed from Morrisville, Pennsylvania.