Kalline is a planet in Sector 1 of Heaven's Fence.
Good Apollo I'm Burning Star IV, Vol. 1 - From Fear Through the Eyes of Madness Edit
Kalline was the sight of a horrendous display by the Red Army in which political dissidents were executed in the streets. Wilhelm Ryan personally oversaw the operation and killed many of them himself as his top general, Mayo Deftinwolf, was preoccupied battling Inferno's rebels. He made Kalline a warning of what would happen to anyone that might have sympathies with the rebels.