The plot of Bond films is very formulaic. At the start of the film, Bond meets with "M", the head of the British secret intelligence service, to receive his assignment. He is then sent to the "Q" branch to receive training in using some clever, special gadget that will play a crucial part in his mission. The device is designed to look like an everyday object, but hides important tools or explosives. Such gadgets have included a watch with a metal cutting laser, a watch with acid to dissolve metal, toothpaste from which explosives can be squeezed, a cell phone with software that can both break into electronic locks and give a powerful electric shock, a pen that is actually a grenade, and a cigarette that can fire a small rocket!