Instructions: Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title
Input: At 1:27 of this clip from Pearl Harbor (2001), Japanese bombers are flying over teenagers somewhere in Hawaii playing baseball. The Japanese machine gunner then gestures his arms vertically, but why? He doesn't appear to be waving as a greeting.
Output:
What's this Japanese bomber machine gunner gesturing with his arms?