NAIROBI, Kenya (AP) — Pope Francis wants to bring a message of peace and reconciliation to an Africa torn by extremist violence, but security concerns are so high that he might be forced to make changes to his itinerary for the final leg of the trip. Francis left Wednesday for his first-ever visit to the continent, a whirlwind pilgrimage to Kenya, Uganda and the Central African Republic that marks the first time a pope has flown into an active armed conflict: the 2-year-old spiral of deadly violence between Christian and Muslims in the Central African Republic. The bodyguard, Domenico Giani, said upon his departure that "some small modifications" could be made to the itinerary if risks emerged, especially for the civilian population or the U.N.