Conversation so far:
what was operation Bojinka ?
When was Operation Bojinka started ?
Who was the instigator of Operation Bojinka ?

Question: Besides Khalid Sheik Mohammed and Ramzi Yousef, were there any other people involved in Operation Bojinka ?
Self-contained rewrite: Besides Khalid Sheik Mohammed and Ramzi Yousef, were there any other people involved in Operation Bojinka ?