  We propose using large Air Cerenkov Telescopes (ACT's) to search for optical,
pulsed signals from extra-terrestrial intelligence. Such dishes collect tens of
photons from a nanosecond-scale pulse of isotropic equivalent power of tens of
solar luminosities at a distance of 100 pc. The field of view for giant ACT's
can be on the order of ten square degrees, and they will be able to monitor 10
to 10$^2$ stars simultaneously for nanosecond pulses of about 6th mag or
brighter. Using the Earth's diameter as a baseline, orbital motion of the
planet could be detected by timing the pulse arrival times.
