2016 Homeland Security and Law Enforcement Medal: Tom Mariani, Steven O’Rourke and Sarah Himmelhoch Tags: 2016 Sammies Back to All Videos Tom Mariani, Steven O’Rourke and Sarah Himmelhoch led the federal government’s landmark lawsuit against oil giant BP to remedy the devastating environmental and economic damage from the spill. After five years of litigation, the Department of Justice and five states secured a record-breaking $20.8 billion settlement against the company, the government’s largest-ever civil penalty against a single defendant.