Which hijackers didn’t know? Are you indicating that OBL didnt know?
There was speculation that some of the 9-11 hijackers didn’t know it was purely a suicide mission to crash planes, but thought it would be a drawn out hostage taking spectacle as in the past. Obviously...the leaders, the pilots knew the mission. Regardless...in an interview after 9-11 OBL was asked if some of the hijackers didn’t knew the mission was purely to crash the planes...OBL’s response was to laugh. In other words, it’s no hurtle to another Muslim unwittingly to their death.