Sean Parnell, the Pentagon's chief spokesman and a senior adviser to Defence Secretary Pete Hegseth, has emerged as a leading candidate to replace outgoing Army Secretary Dan Driscoll, according to The Hill. The move comes as the Trump administration reshuffles top defence posts, with Driscoll's departure reportedly stemming from clashes with Hegseth over Army leadership cuts and the pace of military transformation. Parnell's appointment would require Senate confirmation, which could prove complicated given controversy from his past.

Parnell, 45, is a decorated former Army Ranger who served in Afghanistan and later wrote a bestselling memoir and several novels before entering politics. His Senate bid in Pennsylvania collapsed in 2021 after he lost custody of his three children amid a divorce in which his wife accused him of abuse, a factor that may complicate his path to confirmation by the Republican-controlled Senate. Florida congressman Brian Mast has also been floated as a possible contender, while separately Trump nominated Hung Cao, currently acting secretary, to formally take over as Navy Secretary. Driscoll's exit follows reported tensions with Hegseth over firings of senior generals and concerns Driscoll raised directly with Trump, with sources suggesting personal rivalry, including Driscoll's own reported presidential ambitions, also played a role.