<s>
A	O
crisis	B-Application
actor	I-Application
(	O
aka	O
actor-patient	B-Application
or	O
actor	B-Application
victim	I-Application
)	O
is	O
a	O
trained	O
actor	O
,	O
role	O
player	O
,	O
volunteer	O
,	O
or	O
other	O
person	O
engaged	O
to	O
portray	O
a	O
disaster	O
victim	O
during	O
emergency	O
drills	O
to	O
train	O
first	O
responders	O
such	O
as	O
police	O
,	O
firefighters	O
or	O
EMS	O
personnel	O
.	O
</s>
<s>
Crisis	B-Application
actors	I-Application
are	O
used	O
to	O
create	O
high-fidelity	O
simulations	O
of	O
disasters	O
in	O
order	O
to	O
allow	O
first	O
responders	O
to	O
practice	O
their	O
skills	O
and	O
help	O
emergency	O
services	O
to	O
prepare	O
and	O
train	O
in	O
realistic	O
scenarios	O
as	O
part	O
of	O
full-scale	O
disaster	O
exercises	O
.	O
</s>
<s>
Theatrical	O
makeup	O
and	O
cosmetics	O
,	O
plus	O
rubber	O
and	O
latex	O
appliances	O
,	O
are	O
often	O
used	O
to	O
simulate	O
a	O
variety	O
of	O
wounds	O
or	O
medical	O
conditions	O
that	O
realistically	O
portray	O
victim	O
's	O
injuries	O
,	O
a	O
practice	O
known	O
as	O
medical	B-Application
moulage	I-Application
.	O
</s>
<s>
Tracy	O
also	O
promoted	O
a	O
crisis	B-Application
actor	I-Application
conspiracy	O
theory	O
of	O
the	O
Boston	O
Marathon	O
bombing	O
.	O
</s>
<s>
Crisis	B-Application
actors	I-Application
are	O
claimed	O
in	O
this	O
context	O
to	O
play	O
the	O
part	O
of	O
bystanders	O
or	O
witnesses	O
,	O
emergency	O
response	O
personnel	O
,	O
and	O
(	O
with	O
the	O
aid	O
of	O
stage	O
makeup	O
)	O
wounded	O
victims	O
of	O
the	O
attack	O
.	O
</s>
