a secret underground bunker filled with chemical weapons ready for deployment shrouded in secrecy

secret underground bunker chemical weapon ready deployment shroud secrecy watchfulness facility military peril guardedness covertly confidential armament undercover offense furtive operation safekeepe reserve sensitive security munition camouflage emergency arsenal precaution privation protection fortress warfare silence clandestine safeguard safety hazard surveillance evasion storage obscure fortify classify defenseless preparedness quarantine