when Milo and Tyler return from the funeral wearing a white dress uniform and a dark suit respectively, Gibbs refers to them as "an officer and a gentleman".
when Milo's speech at the wake includes his F-14 entering a flat spin, Goose's death, shirtless beach volleyball games in cutoff jeans shorts and "You've Lost That Lovin' Feeling", Katelyn points out that this is from "Top Gun".