A strike team is soon recruited as well. The team is made up of FBI agent Dominic Caruso and Marine Captain Brian Caruso, nephews of Jack Ryan, Sr. Both were chosen for their ability to kill enemies in cold blood.It's all training until cells of Islamic fundamentalists cross the U.S.-Mexico border armed with of MAC-10 sub-machine guns and attack 4 suburban malls across the nation killing dozens of people despite National Guard forces at one mall and the team at another. When a child he was holding in his arms dies in the mall, Brian decides it's the right thing to do. The Campus decides the brothers are ready and implements a "reconnaissance-by-fire" strategy to flush out the terrorist leaders. The team then goes across Europe killing the terrorists, later joined by Jack Ryan Jr.
The team achieves this with a weapon utilizing succinylcholine, developed by a Columbia University professor whose brother died in the 9/11 attacks.The succinylcholine is delivered through a hypodermic needle disguised as a pen. Twisting the nib switches the tip from a normal tip to a sharp needle that delivers 7 milligrams of the substance. Only 5 milligrams are necessary for death. The substance causes completeparalysis at 30 to 50 secondsand death at 3 minutes, shutting down all the muscles within the victim except the heart, including the diaphragm. However, it makes the kill look like a heart attack, thus raising no suspicion.
http://en.wikipedia.org/wiki/The_Teeth_of_the_Tiger