LeadSled - I am familiar with some of the live aircraft training these Special Force Cops use to get in Perth. I got detailed info from one such event on an Australian Airlines aircraft. Airline staff are on board during this.
The boys are fairly brutal and zero consideration is given to the aircraft during training (nor should it be).
Over the years I have had many mates join many of the big airlines, while emergencies are certainly part of company training. Not one of them has ever mentioned detailed live bomb threat or hijack training.
The training they have mentioned is as above, where they are part of the Special Forces Training - while they experience the event and thunder bombs, they are merely props in the raid and certainly do not receive a participation certificate.