They controlled the outside and secured the perimeter, the *textbook* operating procedure for the day. Reportedly, JCSD was ordered by the feds not to make entry, and to wait until the federal SWAT units and TV cameras were there.
Among other procedures that in retrospect seem a bit uncalled for: the fed entry team of clearing rooms with full-auto fire that included full magazine dumps, including one instance in which it nearly killed a surviving witness hiding in a cabinet.
