“After 21 years of people climbing over it and salt air from the ocean eating away at it, ‘Chain Reaction’ is in danger of falling down. The city’s planning staff, estimating it could cost as much as $400,000 to fix, recently recommended that if proponents of the work can’t raise that money by November the city should simply get rid of it. In the meantime, they’ve put a fence around it (chain link of course) to protect the public.”