Trivia: When doing Hogan's Alley, right after Leslie shoots the shotgun, he turns around and everybody ducks except for Tackleberry. That's because Leslie hasn't pumped the shotgun, so there isn't a live round in the chamber. Tackleberry knows that, so doesn't panic.
Trivia: The scene of Blankes and Copeland entering the academy and getting their heads shaved were filmed in the wrong order. The haircut scene was filmed first so when the actors playing those characters enter the academy, they had to wear wigs.
Trivia: The character of Callahan was supposed to be a mannish woman. Leslie Easterbrook (who was cast to play her) had to convince the filmmakers to let her portray Callahan as a sexy but tough seductress.
Trivia: Hooks' soft voice was Marion Ramsey's impression of Michael Jackson.
Answer: With no witnesses to say HOW their guns were taken, they could have said they were taken by surprise and overpowered. Knowing their characters, this is likely what happened. No one would know the truth, that they simply froze and allowed the man to take their guns away.