Own firsthand experience even something as basic as emergency radios working can still be a problem in a terror attack. I can tell you as a former commander of the s. W. A. T. Team and we would do operations in and around the hilly areas of the city which are most of the city, you have problems. Its tough to communicate. That is the achilles heel for any kind of operations. But not all challenges are technical. Theres also the issue of how to control the soft targets like a crowd leaving a big events. When youre in a situation where youre dealing with a large group of people, its more difficult. Reporter beefing up security after manchester events . We do threat assessments an outline events. Reporter there are challenges. For example, shortly after donald trump became president , San Francisco police opted out of the Fbi Joint Terrorism Task force. There were some concerns from various members in the community on our policies and our participation. Reporter what was the concern . Firs