A security lieutenant at New York’s Indian Point nuclear power complex has filed a lawsuit claiming the plant is unsecure.

According to a Washington Post article, the $1.5 billion lawsuit was filed Tuesday in state Supreme Court by Clifton Travis Jr. It names as defendants the plant owner, Entergy, and three managers. Travis still works at the plant, but says he’s been marginalized over his security criticism, the report says. The suit also claims that the plant routinely fails anti-terrorism drills.

The report says that plant spokesman Jim Steets says that Entergy invested "more than $100 million in the last 10 years on security and has deemed it secure."