Frank Heart has died. Among the many accomplishments in his career, he led the team that developed the ARPANET IMP at BBN. Frank went to MIT to study power engineering but the early digital computing course taught by Gordon Welchman led Frank to switch to digital computing. He worked on Whirlwind and joined MIT's Lincoln Lab where he sought out digital applications for computers. Among the life long friends Frank made at Lincoln were Ed Fredkin and Wes Clark. In 1966 Frank was recruited to BBN by Danny Bobrow and Dick Bolt. He remained at BBN until 1994, retiring as president of BBN's research and development activities. Frank's health had been slowly failing over the past few years. I doubt BBN would have been awarded the IMP development contract if BBN had not put Frank forward as project leader.