leaving, just as you were talking. sorry, go ahead. >> they are the facts. that is the list of where has been targeted thus far. >> as the police investigate incidents like this, they look for ties, for commonalities. we already know the packages themselves have some similarities. nature of the device, delivery method. in this case, they were mailed to various addresses. so you have an m.o. that appears to be common. then you begin to look at motive. it's very early. it's very early in this, but when you look at that list, it certainly has one thing in common, wolf. that's something folks that have been on the list -- folks and organizations that the president attacks. >> early, and clearly things can change, but that's a disturbing development. i want to go to the white house. jeff zeleny is getting more information. >> we are, indeed. we're told the president has been briefed several times about the situation throughout the morning. he's still in the residence of the white house where he usually