Riding the world of a prick who lives in a 'mansion' while sending others out to martyr themselves killing innocents is a must and shows the resolve of the US to close the case. It is not revenge but rather the end of an FBI case into a mass murderer.
Geoffrey Dahmer got it as well...
Neither of these events necessarily rid the earth of these scumbags but it hopefully might deter some others as we will get you no matter how long it takes or wherever you hide.
Bravo Zulu to all concerned....