A Fond du Lac man accused of threatening another man with a knife in front of an elementary school has been charged. Leonard Dake is charged with second degree recklessly endangering safety, possession of a dangerous weapon on school grounds, disorderly conduct and resisting an officer. Assistant Police Chief Steve Klein says Dake and another man got into an argument outside Evans School shortly after 3pm Wednesday. Klein says Dake threatened the other man with a knife. Police used a Taser to subdue Dake. The school was placed in lockdown. Klein says there were no injuries.