Dynamite bomb with smartphone as the controller. The bomb is activated and explodes when the smartphone / decide it's time. It can be also activated by phone call (another possibility for the terrorist)
NOTE: The model is not entirely materialised in blender. It look as in the pictures only in 3ds max.
In blender and other software (that support *.obj and *.fbx files) - some parts of the model have no color you will have to set up the materials yourself.