Simplify the following text for a Grade 9 native English-speaking person.
Original: After FurtwÃ ngler fled to Switzerland in 1945 , Leo Borchard became chief conductor , but a few months later he was accidentally shot and killed by American forces occupying Berlin .
Simplified: After FurtwÃ ngler fled to Switzerland in 1945 , Leo Borchard became chief conductor . This arrangement lasted only a few months , as Borchard was accidentally shot and killed by the American forces occupying Berlin .