Death Star (star Wars) -

: Lead engineer Galen Erso intentionally stalled development for years after learning the project's true purpose. He also built a secret "fatal flaw" into the thermal exhaust port, which the Rebel Alliance later exploited.

Faced constant shortages of raw materials and missed engineering deadlines due to the unprecedented scale. Death Star (Star Wars)

: The station became fully operational just before the events of A New Hope , under the command of Grand Moff Tarkin . Development Challenges Impact on Project Secrecy : Lead engineer Galen Erso intentionally stalled development