MANTECH  (8) Northrop Grumman Space Systems  (6) LMI Consulting  (6) PARSONS  (5) Leidos  (3) General Dynamics Mission Systems  (2) RTX  (1) CACI International  (1) Navajo Nation Corporation, Tribal Corporation - Diné Development Corporation  (1) Peraton  (1) TEKSYNAP  (1)