We've debated what will happen to Firebrand when the time limit on his nanos runs out or if he even got the suicide suite of nanos. From the text we're told that the nanos receive a reset signal periodically. Where does this signal come from? After all, some people would have to travel, perhaps extensively and protracted travel that would take them away from Mesa or where-ever home is. How does the MAlign keep from having these travelers keel over in the middle of a conference in Mannerhime?
Additionally, who all received the full suite of nanos, the ones which included the suicide nanos? It seems field agents who were sufficently inside or aware of the onion, such as Firebrand, were supposed to have these nanos. How could agents carry out long field assignments?
Herlander was taken from Mesa all the way to Haven than back out to Manticore before relocating to Bolthole. That happened over a fair bit of time and he's not dead so presumably he doesn't have the suicide nanos.