<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.mpaka 1997, wote marais wa zamani, na familia zao, walikuwa zinalindwa na secret service mpaka rais kifo.  <response>: until 1997, all former presidents, and their families, were protected by the secret service until the presidents death. all subsequent presidents were protected for a maximum of ten years after leaving office. 