I think OKC has a 3/4 cent sales tax for public safety and Norman has a temporary 1/2 cent public safety sales tax
Dunno about about OKC, but Norman's 1/2-cent was for building, equipping, and staffing two new firehouses and hiring a bunch of new cops. One firehouse is built and in service with a new Quint and a new brush pumper. The other hasn't even had the land cleared. AFAIK, the cops have all been hired.
The problem with Norman's sales tax (aside from being a sales tax!) is that it's temporary and runs out in 2013. No idea what will happen to all the cops and firemen who are being paid from that tax once it runs out.
None of the Norman sales tax money goes directly to EMS. There is talk of the NFD converting some Engine Cos to Paramedic Engines but so far it's just talk.