Info-sharing within the broad LE community has come a long way since 9/11 - but there are still significant obstacles to overcome before emerging capabilities can be leveraged and exploited by the average cop.

When I first began working with a county-level "joint" gang task force, it was very frustrating to realize that none of the individual city jurisdictions could communicate with each other - no 'net connectivity at all, and extremely limited comms otherwise. "Info sharing" was conducted the old-fashioned way - by physically going over to the other guy's office and comparing notes. Given the size of the county and the tempo of ops, this was a long way from being even minimally effective.

Now, any LEO can obtain access to systems like CyberCop, FPS Link Portal, LEO and their respective part of the RISS system. Each is a very useful resource in its own context, and provides information that your average city cop would have had an extremely hard time getting his hands in a timely fashion pre-9/11. However, none of these even begin to address the problem of rapid dissemination of tactical intelligence across jurisdictions.

The real point is that the bad guys stay abreast of LE capabilities and they exploit these comms gaps and manning issues. (Manning issues - in CA the cost of living has resulted in many jurisdictions being significantly understrength, and attempts to concentrate manpower in hotspots and during critical time periods only results in constant catch-up as the bad guys displace)