It said that Dick Cheney owned Grumman? My emotion is changing from confused to suspicious.
They are #3 at the Pentagon hog trough.
Yes, they do a lot of work for the DoD but Cheney and Grumman were in a prolonged and heated battle when Cheney was Sec. of Def. Grumman wanted to sell the Pentagon hundreds of new F-14s but Cheney said that the ones they already had could be refurbished and upgraded for half the price. It was quite a drawn out political battle.
I can't find anything that says Grumman makes ID tags nor that ties Cheney to Grumman. I think you may be mistaken.