got to be hyperfocused on right now. the first is they got to attempt to discern what the bombmaker's signature is. now, every bomb has four components. a power supply, and initiator, a particular type of explosive, and it has a switch. in this instance that switch appears to have been a trip wire as explained by the atf special agent in charge. the second piece of this, which is equally important, is link analysis. and early on in this investigation there was some concern that this might have been a hate crime, predicated at targeting packages delivered to the porches of african-americans or latinos. in this instance, what happened last night appears to have been what we call a target of opportunity, meaning the device was set up, a trip wire was employed and whatever victim came out and activated it would thus be hurt. those are two important things we need to find out. a, is it the same bombmaker which it appears to be, and, b, what is the linkage here, how can we get in front of this and