Rohrer nor the Fairfax County police did little to lower crime rates

Neither David Rohrer nor the Fairfax County police are solely responsible for lower crime rates in the county. Crime is down all over the nation and in most first and second world nations as well.  In the US, technology, community outreach by local government, demographics (Fewer young people, the leading criminal offenders) higher and longer benefits to the poor and unemployed, public awareness, severe sentencing, and general rising of living standards are largely responsible for lower crime rates.