Sinclair Broadcast Group's The National Desk will add a two-hour evening newscast on CW affiliate Channel 12.2 and 67 other stations Sept. 27. Sinclair premiered The National Desk on Jan. 18 as a morning national newscast anchored by Jan Jeffcoat from Washington, D.C., on 68 stations, including all MyNetwork and CW channels owned or operated by Sinclair. The 6-9 a.m. newscast "gives viewers noteworthy broadcasts with the most pressing news each day," Sinclair said in its announcement. The main anchor for the 10 p.m.-midnight edition "is still under consideration and will be announced in the coming months," Sinclair said. Mike Garber, news director at KUTV-TV in Salt Lake City, will become