[ WP ] Portal guns are mass-produced and cheaply available for the public to use . The crime rate has skyrocketed as a result . There is a crisis of anti-portal security . You are testing your new anti-portal measures when suddenly robbers using portals break into your facility .

*If there ever was one person in history to scorn, it would be Cave Johnson. * 
 
 I extend my left hand toward a nearby wall and shoot out a tiny beam. It instantly expands into a swirling red portal big enough for an average-sized Westerner to fit through. 
 
 Smiling, I point my right hand at the ceiling above me and fire a green portal. The gateway immediately reveals a connection to my red portal. I press a button on my right glove, closing both portals. 
 
 `` Good, looks like everything is in order,'' I report. `` I do n't know why you chose these colors, it feels too Christmas-y.'' 
 
 Laughter fills the room from an overhead speaker. 
 
 `` I happen to like Christmas, Brian,'' teased Dr. Ishigawa, the head researcher at Aperture Science, Incorporated. `` I've run the diagnostics, the anti-portal firing-mode should be functional. Ready when you are.'' 
 
 A turret deploys from the floor and shoots a yellow portal in front of me. Another turret appears and opens up a blue portal next to the first one. 
 
 Pressing another button on my glove to toggle a new firing-mode, I aim at the yellow portal with my left hand and fire. A crackle of bright electricity envelops the portal. In a few seconds, the blue portal begins to shake as it too becomes surrounded by electricity. 
 
 One of the turrets shoots a tennis ball at the yellow portal. 
 
 The ball bounces back, as if it hit a wall. 
 
 `` Portal freezing successful,'' notifies Dr. Ishigawa. `` Move on to the next phase.'' 
 
 I press the last untouched button on my glove. 
 
 The two portals suddenly shake uncontrollably and close down. 
 
 A moment later, both sentry guns explode. 
 
 `` Overload feedback successful. Excellent.'' 
 
 `` How long until we can start outfitting the Security Corps with this equipment?'' I ask. 
 
 `` Your elite squad should be ready within 24 hours; the rest of the Corps will take another day at most.'' 
 
 Abruptly, the alarm system blares into life. 
 
 `` Report!'' I order. 
 
 `` Three intruders in the East Gate.'' Ishigawa swears softly. `` It's the Hand of Wheatley.'' 
 
 I put on my helmet and activate the heads-up display. 
 
 A melodic voice greets me. 
 
 `` Technically, you have Chell to blame for not completely destroying Wheatley when she had the chance.'' 
 
 GLaDOS, the Genetic Lifeform and Disk Operating System artificial intelligence created by infusing Caroline's consciousness with the Aperture Science digital network. Caroline, Cave Johnson's most dutiful assistant. 
 
 Together, we work to destroy all the cheap, black market knock-offs of Aperture's Portal Gun. I see it as my moral obligation, having been the Michigan chief of police for several years. 
 
 GLaDOS sees it as more of a test of her abilities. I know she sees Wheatley's technology as inferior - and rightly so - and in need of immediate dismantlement. 
 
 We have work to do.
