NRC file photoAs Solartopia author and lifelong anti-nuclear activist Harvey Wasserman has written, "the horrifying collapse of a south Florida condo should alarm us all about the next reactor catastrophe." As but one example is Davis-Besse, Ohio. A 44-year old reactor, it has had multiple near-misses with meltdowns in the past. It also has long had a severely cracked concrete containment Shield Building (see photo, showing NRC inspection). The ever worsening cracking is so severe, exterior surface spalling could initiate a meltdown, by falling concrete damaging or destroying safety-related systems, structures, and/or components below. The failed containment would likely not prevent the ensuing catastrophic release of hazardous radioactivity. Tens of thousands could be killed or injured.