devices, couple of them were set on a porch and booby trap detonated, meaning the person that went out to the porch, open it, exploded. also did devices with a trip wire. that was the switch that set off impulses to make the bomb. is it out of the realm of possibility this couldn't be part and parcel of the one we looked at all week, no. but just with what we see now, looking at the investigative tea leaves, it appears to be a different set of bomb making. >> samantha, the director of the fbi christopher wray says there's a chance more are out there, right? but now that sayoc is in custody, just by the timing of mail delivery, we're going to soon be outside that window that if he is working alone, that there would be more in the system, right? >> yes, but we're not there. snail mail is called that for a reason. at this point we have not reached the window where anything he may have sent before he was put in prison did not