Charlie knows people and he has a bit of a routine when he goes there, so God in all his goodness and creative wonder has given Charlie the opportunity to go to Kenya.
he is still speaking to us.
...forgiveness and grace...,
joy in the midst of suffering,
those kinds of traits.
Also as Ben pointed out on Charlie's last trip to Uganda, Charlie is African at heart, anyone who has seen Charlie in Uganda will testify the man is more alive and free and in his element there.