Parsec-scale Structure and Kinematics of Faint TeV HBLs
  We present new multi-epoch Very Long Baseline Array (VLBA) observations of a
set of TeV blazars drawn from our VLBA program to monitor all TeV-detected
high-frequency peaked BL Lac objects (HBLs) at parsec scales. Most of these
sources are faint in the radio, so they have not been well observed with VLBI
by other surveys. Our previous measurements of apparent jet speeds in TeV HBLs
showed apparent jet speeds that were subluminal or barely superluminal,
suggesting jets with velocity structures at the parsec-scale. Here we present
apparent jet speed measurements for eight new TeV HBLs, which for the first
time show a superluminal tail to the apparent speed distribution for the TeV
HBLs.
