Reason: adversary-technology national-security risk.

official-recordanalysisDisclosure & Government

STATED: some UAP may be foreign-adversary collection platforms or breakthrough tech; premature disclosure could aid adversaries or reveal what the US has/hasn't attributed. ODNI 2021.

STATED: some UAP may be foreign-adversary collection platforms or breakthrough tech; premature disclosure could aid adversaries or reveal what the US has/hasn't attributed. ODNI 2021.

Connected entities

Disclosure-Blocker Faction (documented).

Sources