Visible crew/equipment: At the start of the episode when the Nazi attacks Ace in the plane, a boom mic can be seen at the top of the screen. (00:00:55)
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Visible crew/equipment: When the alligator lands on the German guards, a fluffy grey boom mic can be seen at the top of the screen. (00:04:25)
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Visible crew/equipment: When the crocodile is thrown at Ace, the crash mat is visible as he lands. The mat disappears in later shots. (00:01:00)
Answer: The cello is a large four-stringed instrument, which, when it is played, stands vertically on the floor between the player's legs (assuming they are seated). If it is to grow as large as the other instuments mentioned will, it would require a rather unseemly lack of femininity to be able to encompass it with the legs.
Rooster of Doom