This from rescue equipment company Holmatro USA:

"[Laminated] glass consists of a plastic interlayer, made from polyvinylbutyral, sandwiched between two layers of annealed glass. In general this is used for the windshield."

"[Laminated glass] can be cut with several tools such as an Axe, Air Chisel, Glas-Master tool or reciprocating saw. These techniques will generate small glass fragments and dust. The protection of the victim and rescuer should be considered before the glass is removed."

In other words, your SAK or Leatherman might be inadequate for the job. The suggested C4 on the other hand... <img src="/images/graemlins/grin.gif" alt="" />