The Terminator RPG Pg146

TECH-COM AFTER ACTION REPORT: The
Ground HK is a beast in battle. If it doesn’t roll
right over your position, its plasma cannons
will either cook you, vaporize you, or blow
you to ragged meaty chunks. When set to
strobe. They are
sometimes accompanied by sirens that can
put out a sonic frequency that can induce
nausea, upset stomachs, and worse.
Luckily, the HK-Tanks only switch
to sonics as a last resort, preferring
instead to use the rumbling of their tank
treads to strike fear into their prey and
drive them into the open. The sirens run
on the same circuit as the flashers, so
aim for those red-and-blue blinkers
and you’ll short out the sonics.