NetJets Question

[Y]

Can anyone help me understand the various NetJets companies?

I understand there are different companies that operate a particular type of jet.

Is it true that the G4's (G-400?) operating internationally are done so under a different company than the rest of the fleet?

[SunsetZ]

I fly the Falcon 2000 for Netjets. Netjets aviation flys everything from the Ultra to the BBJ excluding the Gulfstream 400 and 500. Those are flown by NetJets "International" based in Savanah, GA.
Both companies are subsidiaries of NetJets, Inc. owned by Berkshire Hathaway.