Officials rejected claims they were trying to get ahead of the courts, saying the accelerated schedule responds to urgent security needs and that pausing work could compromise protections built into the project.
Filings describe the development as an integrated complex extending several stories underground with hardened construction, shelters, medical and military spaces, sniper positions and a rooftop drone port, using materials meant to resist ballistic threats and the effects of a nuclear blast. The Supreme Court will now weigh whether construction can continue amid the dispute.