TR-3.1 was produced to prove out 2 Boosted 2 Bears panel data logger, radio, GPS, and parachutes.
Test Rocket 2
TR-2 was produced to prove out Boosted Bears boosted dart configuration. The rocket was flown with a scaled down deployable fins and avionics.
Test Rocket 1
TR-1 was MASA-Deaborn's second ever rocket launched. The rocket was built to test the parachute sizes that were to be used to indepently recover the deployable payload and also test the various avionics that were to be used on Operation Overwatch.