  We have used the Very Long Baseline Array at 5 GHz to image the nucleus of
NGC 1068 at two epochs separated by 2.92 yr. No relative motion was detected
between the high brightness-temperature knots within components NE and C
relative to the nuclear component S1, placing an upper limit of 0.075 c on the
relative component speeds at distances of 21 pc and 43 pc from the AGN. The low
speed is consistent with the low bulk flow speed previously inferred from
indirect arguments based on ram pressure at the bow shock and on line emission
from the jet-cloud collision at cloud C. The components are probably shocks in
the jet, and the bulk flow speed could conceivably be higher than the limit
reported here.
