Former independent presidential candidate Robert F. Kennedy Jr. made his first appearance at a rally for former President Donald Trump Friday hours after ending his campaign and endorsing the Republican nominee.

Trump, 78, described the 70-year-old scion of the Kennedy political dynasty as an “incredible champion” for American values and a “highly respected” and “great person” before bringing him out as a surprise guest at the Desert Diamond Arena in Glendale, Ariz.

“Bobby! Bobby! Bobby!” Trump supporters in the packed arena chanted as he walked out on stage.