On the 10th anniversary of Hurricane Katrina’s destruction along the Gulf Coast, registered nurse volunteers with the disaster relief program, Registered Nurse Response Network (RNRN), which sent hundreds of RN volunteers to provide disaster relief to the region in the wake of the deadly storm, say that critical lessons which exacerbated the 2005 crisis – global climate change, our lack of a national healthcare system, and failure to invest in public resources and infrastructure – have still not been learned.