Former manager of Halliburton Anthony Badalamenti pleaded guilty Tuesday to destroying evidence linked to the 2010 Gulf of Mexico spill. He faces a maximum sentence of one year in jail. Prosecutors say the company's program manager and another Halliburton employee both received instructions from Baladalementi, 62, to delete computer records. The energy company has already pleaded guilty to unauthorized data deletion. The explosion at the Deepwater Horizon rig caused the biggest offshore oil spill in U.S. history, and resulted in the death of 11 people.