Story highlights The remains of around 400,000 people are in Arlington National Cemetery

Trump visited the site ahead of his inauguration

Washington (CNN) President Donald Trump honored the US service members who made the ultimate sacrifice by visiting Arlington National Cemetery in recognition of Memorial Day Monday morning.

After laying a wreath on the Tomb of the Unknown Soldier, Trump spoke in remembrance of fallen soldiers and respect for their families, alongside members of the military and his administration, including Chairman of the Joint Chiefs Gen. Joseph Dunford and Secretary of Defense James Mattis, a retired general.

"We only hope that every day we can prove worthy, not only of their sacrifice and service, but of the sacrifice made by the families and loved ones they left behind," Trump said.

Making a special recognition to Homeland Security Secretary John Kelly, a retired general, Trump offered his thoughts to the Kelly family for their son, who died in Afghanistan.

"We pledge to you that we will always remember Robert and what he did for all of us," Trump said. "Thank you John."

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