1: You are flying in your beautiful Bonanza. The 4-Ship entered initial and pitched out for landing. You are flying the #2 positon in a 4-Ship formation flight. On downwind you drop the gear and start the flaps down. The Landing Gear Horn will not shut-off. The landing gear does not appear to be down. What do you do know?
Use the resources of the flight. Lead is probably committed to landing. The #3 flight member is behind you. Consider using the radio to coordinate #3 joining up loosely to check landing gear. CAUTION - did you brief an emergency plan of action?