The murderers were brazen in killing, but they were not foolish.
If they clearly sensed police ambushes and roadblocks, they wouldn't risk it.
They would likely wait patiently for the next opportunity.
If this tug of war continued... the police would only become more passive over time.
"Everyone's right, we're mainly facing two difficulties now,"
the male team member summarized while leaning on the table:
"[First, we can't let the murderers detect our actions, including protecting the scientists, setting up roadblocks and nets, otherwise they won't take the bait.]"
"[Second, if we don't ambush in advance, we can't protect the lives of the scientists. Even if we catch the murderers afterwards, the cost is too great.]"