Johnson said that in addition to the new patrol officers, the department would increase its number of detectives by 200, which would bring the total to 1,063 — still about 100 fewer than in 2009. The plan calls for hiring 112 new sergeants, 50 new lieutenants and 92 new field-training officers. Hiring more supervisors is likely to be among the demands that will eventually be made by the Justice Department in its ongoing investigation of Chicago police, which was prompted by the Laquan McDonald officer-involved shooting scandal.