Rear CS of soldier testing radio equipment on cathode-oscillograph. Rear shot of projectionist in classroom, "The End" on screen where film has been shown, lights going on and army captain walking to front of class, starting lecture. Three-quarter front MS of students watching film in class, projector visible in background. Rear shot of corporal tuning AT-25 ground radio transmitter. CU of sergeant major's hand adjusting dial on cathode oscillograph.