  The ComPair balloon instrument is a prototype of the All-sky Medium Energy
Gamma-ray Observatory (AMEGO) mission concept. AMEGO aims to bridge the
spectral gap in sensitivity that currently exists from $\sim$100 keV to
$\sim$100 MeV by being sensitive to both Compton and pair-production events.
This is made possible through the use of four subsystems working together to
reconstruct events: a double-sided silicon strip detector (DSSD) Tracker, a
virtual Frisch grid cadmium zinc telluride (CZT) Low Energy Calorimeter, a
ceasium iodide (CsI) High Energy Calorimeter, and an anti-coincidence detector
(ACD) to reject charged particle backgrounds. Composed of 10 layers of DSSDs,
ComPair's Tracker is designed to measure the position of photons that Compton
scatter in the silicon, as well as reconstruct the tracks of electrons and
positrons from pair-production as they propagate through the detector. By using
these positions, as well as the absorbed energies in the Tracker and 2
Calorimeters, the energy and direction of the incident photon can be
determined. This proceeding will present the development, testing, and
calibration of the ComPair DSSD Tracker and early results from its balloon
flight in August 2023.
