President Trump named U.S. Secret Service Deputy Assistant Director Anthony Ornato as his new Deputy Chief of Staff for Operations on Saturday.

“I have worked with Tony for 3 years - he will do a fantastic job!,” the president tweeted. “Thank you to Dan Walsh for his great service, and congratulations to Tony!”

While serving as Special Agent in Charge, Ornato accompanied the president to the Demilitarized Zone (DMZ) in North Korea to meet with the country’s leader Kim Jong Un in June. False reports had circulated that Trump walked into North Korea without Secret Service protection.

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The White House said last month that Walsh would leave the office of operations, which plans foreign trips for the Trump administration and allocates resources for White House aides.

The role is one of three White House Deputy Chief of Staff positions and serves just under the White House Chief of Staff. The other two positions are Principal Deputy Chief of Staff, a role filled by Emma Doyle, and Deputy Chief of Staff for Policy Coordination, currently Chris Liddell.

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Walsh was one of the few current White House officials who had served the Trump administration since its inception; he had been a government employee for nearly three decades. Walsh has now accepted a job in the private sector, according to The Washington Post.