Discrete Event Sim in LISP

[cox@aio.jesnet.jsc.nasa.gov (Brian Cox)]

Hi! Does anyone have any information on 'public domain'
discrete event simulation code written in LISP?  We are
developing a qualitative modelling and discrete event
simulation tool which is currently written on top of KEE
and SimKit.  We are going to reimplement off of KEE and
SimKit and would prefer not to be tied down to a vendor.
However, if there are any discrete event simulation tools
from a vendor written in LISP and distributed with access 
to code, this information would be helpful, also. Thanks.

Brian Cox
cox@aio.jesnet.jsc.nasa.gov