lane
n.— «The man at the center of the growing furor over the National Security Agency’s surveillance of Americans’ domestic phone calls, Gen. Michael Hayden, is an Air Force officer who never flew a fighter jet or dropped a bomb. He rose through the ranks by, in Pentagon parlance, staying in his lane.» —“Domestic surveillance concerns shine light on Hayden’s low profile” by Stephen J. Hedges Duluth News Tribune (Minnesota) May 13, 2006. (source: Double-Tongued Dictionary)