He risked his life to save that of others, and was given the nation’s highest award for Valor — the Medal of Honor — for it. Now, however, Sgt. Dakota Meyer is in the midst of a different battlefield, as he fights off allegations that he is mentally unstable and has a drinking problem.

BAE Systems, a defense contractor, has accused Meyer as being mentally unstable, and that he has a drinking problem. Meyer has already filed legal papers refuting the claim, saying that these charges were made in retaliation, after he objected to an alleged decision made by BAE to sell sniper scopes to the Pakistani military.

Meyer left active duty in May 2010, and eventually worked for a small business owned by a service-disabled veteran – Ausgar Technologies. Retired military naval officer and Ausgar Technologies senior program manager Tom Grant praised Meyer as an employee, telling ABC: “He exhibited a maturity for his age and an insightful capability to get the job done and provide recommendations to improve on what we are doing. I was very impressed while he was working for us. He was an outstanding employee.”

He also shared that he did not see evidence of mental instability or a drinking problem while Meyer worked at Ausgar.

Meyer began working at BAE Systems, a British military contracting company, in March 2011. Meyer learned that the company was attempting to sell thermal optic scopes to the Pakistani military, and the lawsuit indicated that he had written about it to BAE Systems manager Bobby McCreight: “We are taking the best gear, the best technology on the market to date and giving it to guys known to stab us in the back… These are the same people killing our guys.”