Rime Scene Investigations: Generalists vs. Specialists

The documentation of crime scenes is a methodical process involving a wide range of items that can become evidence.

Many of these items require special techniques for collection and analysis (e.g., blood, firearms, fingerprints, trace, explosive residues, etc.).

Discuss the merits (pro and con) of having Specialistsat crime scenes to handle such specialty items. Compare this to having Generalistswho might handle most anything.