Alan John "A. J." Buckley is an Irish-Canadian actor. He is known for playing nerdy crime lab technician Adam Ross on the television series CSI:NY (2005-2013) and Navy SEAL Sonny Quinn on the television series SEAL Team (2017–present). 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).