Operation Surprise Mr. Hoffman was already underway at 0900 hours Friday when the ninth-graders at Valley View Middle School in Edina marched into the gymnasium.
Moments later the pep fest began with a message to the commander-in-chief, aka Principal Shawn Dudley.
"Sierra Delta, this is Pigeon. We're ready for takeoff. Over," freshman Margaret Kajer shouted into her walkie-talkie.
A muffled voice answered back: "10-4. I have the target."
The lights dimmed. The room went silent.
At last, math teacher Chris Hoffman appeared in the doorway, sporting a fresh buzz cut.
"Surprise!" yelled the crowd of students who filled the gym. Hoffman's face turned red as he strode in and greeted the throng, which included his tearful family.
Friday was the last day of school for Hoffman, a flight engineer with the Minnesota Air National Guard who is about to leave for his fifth and final deployment.