Cole, L., Scott, S., Feravolo, M., and Lamba, S. (2014). Preparedness in America's Prime Danger Zone and at the Boston Marathon Bombing Site. (Abstract only.) American Journal of Disaster Medicine. 9(1):17-24.
The authors of this study compared medical response capabilities for critical incidents in Newark (New Jersey's largest city), with those in Boston. The authors found significant disparities between the two locations, but concluded that because medical personnel in both sites had conducted exercises together often, Newark would likely be able to carry out an effective response to an incident like the Boston Marathon bombing.