It has even been known that law enforcement officers unfamiliar with certain investigatory needs, have inadvertently complicated the process, or even destroyed evidence. For example, timing can be all important, but a slow response could result in bad weather destroying a crime scene. People are territorial, and other law enforcement officers are people, so you must develop productive people skills. In some ways my years on undercover sharpened those skills. Just as I had to be able to 'rap,' I now have to be able to have rapport.
Good relations are essential.
I must work with the others involved. The skills here are common sense and an ability and the insights necessary for communication. You have to ask, rather than tell, inform instead of conceal, and be part of the team instead of appearing to be an elite. In other words, just be careful. Dan spent most of the next dozen years working specifically within the state police system, learning its ways and people.