The P-38 that was shot down was carrying the wrong insignia (stars).
As Littlejohn is getting into the boat, Dick Peabody stumbles for real, and Saunders - Vic Morrow - reacts for a second to help. Saunders says "Get with it, huh, Littlejohn?", but that line is dubbed in since Saunders's lips don't move. An unplanned nod to all the times the character of Littlejohn is seen as clumsy.