The first thing we see, when the movie opens, is a groundhog, poking his head out from his burrow. He disappears, frightened away by kids, racing their car in and out of a line of army vehicles, trying to get them to drag race. What song is playing at the time?
Answer: Hound Dog
Written by Jerry Lieber and Mike Stoller, "Hound Dog" was released in 1952 by Big Mama Thornton. The version heard in the movie is the more popularly known rendition, by Elvis Presley, that was released in 1956. Presley's version charted at number 19 in Rolling Stone's 500 Greatest Songs of all time.
The army vehicles (one of which does indulge the kids briefly in a race) are the Russians in disguise, about to shoot their way into Hanger 51.