> CHEROKEE NATION OPERATIONAL SOLUTIONS, L.L.C. Oklahoma Since: 2008 CHEROKEE NATION OPERATIONAL SOLUTIONS, L.L.C.
> CHEROKEE NATION ENVIRONMENTAL SOLUTIONS, L.L.C. Oklahoma Since: 2011 CHEROKEE NATION ENVIRONMENTAL SOLUTIONS, L.L.C.
> CONTROLS AND AUTOMATION ENGINEERING, LLC Oklahoma Since: 2013 CONTROLS AND AUTOMATION ENGINEERING, LLC
