Simplify the following text for a Grade 9 native English-speaking person.
Original: Himmler was disturbed enough by the rumors , and the implication of poor security at the camps , that he emphasized that all corpses should be cremated or buried as quickly as possible .
Simplified: Himmler was so worried by the rumors , and the thought of poor security at the camps , that he said that all bodies should be burnt or buried as quickly as possible .