  The Telescope Array experiment studies ultra high energy cosmic rays using a
hybrid detector. Fluorescence telescopes measure the longitudinal development
of the extensive air shower generated when a primary cosmic ray particle
interacts with the atmosphere. Meanwhile, scintillator detectors measure the
lateral distribution of secondary shower particles that hit the ground. The
Middle Drum (MD) fluorescence telescope station consists of 14 telescopes from
the High Resolution Fly's Eye (HiRes) experiment, providing a direct link back
to the HiRes measurements. Using the scintillator detector data in conjunction
with the telescope data improves the geometrical reconstruction of the showers
significantly, and hence, provides a more accurate reconstruction of the energy
of the primary particle. The Middle Drum hybrid spectrum is presented and
compared to that measured by the Middle Drum station in monocular mode.
Further, the hybrid data establishes a link between the Middle Drum data and
the surface array. A comparison between the Middle Drum hybrid energy spectrum
and scintillator Surface Detector (SD) spectrum is also shown.
