President Bush's flight into Baghdad may have been dangerous, but he has told friends the part of the Iraq war he dreads the most is writing letters to the families of slain soldiers. The notes, however, are cherished by the grieving families. "It was a brief note, probably a form letter, but the President took the time to thank me and remember Brian's sacrifice, and that does make a difference," said Ronald Slavenas of Genoa, Ill., whose son, helicopter pilot 1st Lt. Brian Slavenas, 30, died Nov. 2. "Nothing makes up for the loss, but it is good to know...