A further issue was with the risk oversight function in Citigroup. This was about the personal friendship among longstanding employees. Thomas Maheras, who was the functional head of derivatives trading, Randolph Barker, the deputy of Maheras, and David Bushnell, who was the senior risk officer charged with monitoring risk were all colleagues of longstanding. Reportedly, the personal friendship among them affected the quality of oversight and in 2008 the Federal Reserve made a “scathing review” of risk management at Citigroup (ibid.).