Missile Defense Agency (MDA) director Air Force Lt. Gen. Samuel Greaves is retiring this summer and will be succeeded by the agency’s deputy director, the agency said on Friday.

MDA Spokesman Mark Wright confirmed to Defense Daily that Greaves will retire on July 1 and MDA deputy director Rear Adm. Jon Hill is slated to succeed him in the position.

Hill’s nomination was sent to the Senate in recent weeks. Hill would also be promoted to vice admiral if confirmed.

Hill became deputy director of MDA in November 2016. He previously served as program executive officer for Integrated Warfare Systems (PEO IWS) and Aegis combat system major program manager.

Greaves was confirmed as the MDA director in September 2016. Before serving in that role, he was commander of Air Force Space and Missile Systems Center and the Air Force program executive officer for space (Defense Daily, Sept. 19, 2016).

Greaves succeeded the previous MDA Director Vice Adm. James Syring, who served in the role for almost four years.