1) Transport sick citizens around the globe
2) Extract citizens to avoid legal issues
https://www.latimes.com/world-nation/story/2020-01-19/saudi-arabia-citizens-crimes-flee-us
3) Move wet work teams around with bone saws
I have been tracking them for years and they fly so much they are regulars at the Mojave boneyard. This G-IV being scrapped at Mojave was taken in 2018