Alan John 'A.J.' Buckley (born February 9, 1977) is an Irish-Canadian actor. He is known for playing nerdy crime lab technician Adam Ross on the CSI: NY (2005–2013) and Navy SEAL Sonny Quinn on the series SEAL Team (2017–). He also had roles in Supernatural (2006–2014), The Box (2007), Home Sweet Hell (2015), and as the voice of Nash in The Good Dinosaur (2015).