Defensive tackle Haloti Ngata participated in his first voluntary minicamp Wednesday after completing his spring classes at the University of Utah. Ngata still needs a few more credits to complete a sociology degree at the University of Utah. He was selected in the first round in 2006 after entering the draft as a junior. The three-year starter attended the Ravens' mandatory minicamp in early May but missed the past two voluntary camps. During the mandatory minicamp, Ngata said he k...