After his cousin Joe dies , Layne Vassimer and his girlfriend Macy , along with their friends Stephen , Maurice , Iris and Katrina , decide to clean up Joe's house with the intention of selling it . When they see it for the first time , they discover the house completely covered in plates of iron armor . The group also finds crop circles in the nearby cornfield . When Iris , one of their friends , suddenly disappears they realize something is really wrong . During a blackout , the house is attacked by aliens , who had previously killed Joe and abducted Iris . The group figures out the aliens are allergic to iron , Joe had covered the house in it to keep them out . They attempt to fight the aliens off , but the house is eventually blown up with Layne , Macy , and Katrina the only survivors . In the end , they drive off , listening to the radio . They hear a news report stating that the blackout they experienced affects five western states and parts of Canada . They also hear that people everywhere are being attacked by '' strange creatures . ''

When did the survivors realize that their blackout experience also affects five western states and parts of Canada?

The first rule is parental. The primitive monarchy is in the home. A young baby cries. The trained nurse turns on the light, lifts the baby, hushes it, sings to it, rocks it, and stills its weeping by caresses and song. When next the baby is put down to sleep, more cries, more soothing and disturbance, and the setting of a tiny instinct which shall some day be will--the power of control. The grandmother arrives on the scene. When baby cries, she plants the little one firmly in its crib, turns down the light, pats and soothes the tiny restless hands that fight the air, watches, waits. From the crib come whimpers, angry cries, yells, sobs, baby snarls and sniffles that die away in a sleepy infant growl. Silence, sleep, repose, and the building of life and nerve and muscle in the quiet and the darkness. The baby has been put in harmony with the laws of nature--the invigoration of fresh air, sleep, stillness--and the little one wakens and grows like a fresh, sweet rose. The mother, looking on, learns of the ways of God with men.

How many related people are discussed in this passage?

Grim disappeared upstairs himself, and returned about ten minutes later in the uniform of a Shereefian officer--that is to say, of Emir Feisul's Syrian army. Nothing could be smarter, not anything better calculated to disguise a man. Disguise, as any actor or detective can tell you, is not so much a matter of make- up as suggestion. It is little mannerisms--unstudied habits that identify. The suggestion that you are some one else is the thing to strive for, not the concealment of who you really are. Grim's skin had been sun-tanned in the Arab campaign under Lawrence against the Turks. The Shereefian helmet is a compromise between the East and West, having a strip of cloth hanging down behind it as far as the shoulders and covering the ears on either side, to take the place of the Arab head-dress. The khaki uniform had just enough of Oriental touch about it to distinguish it from that of a British officer. No man inexperienced in disguise would dream of choosing it; for the simple reason that it would not seem to him disguise enough. Yet Grim now looked so exactly like somebody else that it was hard to believe he was the same man who had been in the room ten minutes before. His mimicry of the Syrian military walk--blended of pride and desire not to seem proud--was perfect.
Why did Grim disappear upstairs?