I see that SWAT keeps getting Vigilance rather than Cool, but Cool is used for prepared situations, like making an entry and sniping.

I agree. Cool for SWAT, Vigilance for Patrol.

I see that SWAT keeps getting Vigilance rather than Cool, but Cool is used for prepared situations, like making an entry and sniping.

From the book "In combat situations, outside of those times when a character has patiently prepared to begin the engagement, Vigilance is used to calculate Initiative".

From that, I would say that _starting_ an engagement by sniping would fall under cool. Taking down a hostile that is engaged in a cqb with friendlies requires vigilance, to know who is who, and react fast enough...

Vigilance also represents preparing for the unexpected (like getting ready to do an entry).

Cool seems more about emotional centerredness, while vigilance is about situational awareness (and the book specifically lists professional soldiers as having vigilance).