His cars were always mercedez-benz, bullet-proof tires and windows, designated chauffeurs, closed in, etc. Only 2 pilots were allowed to fly him anywhere. Also, if he were to fly anywhere, he would send out one that looked just like him (dumby-plane) 15 before his own in case someone tried to assassinate him. A swiss roman catholic who hated the nazi regime claimed that god instructed him to remove hitler. He devises a plan: moves to berlin, has in his possession maps, blueprints, guns, ammunition, etc, read mein kampf, joined the nazis, learned to speak german. After a year (1939) of living there, he arranged to attend a commemoration that he knew hitler went to every year. He would stand in the crowd close to where hitler was walking when he laid wreaths on the monuments. He doesn"t fire once because hitler happens to move out of range.