The Department of Homeland Security’s Tactical Interoperabilty assessment can be found here: http://www.dhs.gov/xprepresp/gc_1167770109789.shtm.
The report found deficiencies in all but 6 of 75 of major urban areas surveyed with the Denver Metro area ranking near the bottom. It seems like there is a huge opportunity for the adoption of SDR and CR systems to plug the gaps.
