Liam Keegan, 17, was electrocuted while working in his shed on March 23 More than 400 people gathered at Tullawong Primary School for his service One of Tullawong State School's captains, Liam was also an army cadet Students wore tradie and cowboy outfits to the 'party' for the young man Mourners covered his casket in silly string as it left the service on his tinnie