[ WP ] Long , continuous vibrations are being felt all over the world . As the days pass , they worsen .

One pulse: That was all it took to bring the world to its knees for a day. A single, one second pulse was able to stop everything, traffic stuck on bridges, planes grounded on runways, people fleeing from skyscrapers. I ca n't blame them. When the air around you starts to vibrate like you are standing in front of a loudspeaker at a concert for no apparent reason, I think you are justified in panicking. Overall, that first pulse caused little damage. Some delicate stained glass shattered, thousands of car accidents, three or maybe four planes crashed on runways, nothing too major. The entire world felt this pulse, throbbing everywhere. 
 
 The second time, I figured people would adapt faster. Maybe get back to work after an hour or two. Instead, it was worse. Two days, two days of the world standing still! Businesses closed, highways stopped, planes grounded. This was a week after the first pulse! Only one week! It ’ s not like you can forget about that first pulse that quick! Granted, it was two pulses, probably about two seconds long and three seconds apart, which made the air ring like a plucked guitar string, but still, nothing had happened. We were all still there. Damages from those two pulses was more severe than the last pulse: Windows on the top floors of skyscrapers shattered, paintings and shelves fell down, millions of car accidents, some old TV towers collapsed. Again, not too bad. A unified task force was appointed to figure out the nature of these pulses. All we had to do was wait. They turned their instruments to the ground, and we all held our breath. 
 
 The next series was irregular. Almost a slow melody of five notes, no two the same length, no two the same pitch. Something a child might have composed. It occurred four days after the two pulses, and it seemed to be stronger. The pulses shook you down to the bones, all the way in your heart. The first set of deaths were directly attributed to this. The vibrations were too much for some of our older folks. The other damages were quite numerous. Several planes fell from the sky after the vibrations ripped the fuselages apart, a couple of buildings collapsed, the remaining windows across the world shattered. Overall, a global state of emergency. The task force turned up nothing. They said, with a 70 percent confidence in their numbers that the vibrations were n't coming from the ground. Something else was causing them. We braced ourselves for the next wave, surely to be worse than the previous ones. 
 
 The next day seemed to take an eternity. Injuries were patched up, roads were cleared, and emergency supplies were distributed. Several riots broke out. Then it came in: the pulses which would change everything: A single pulse, then something remarkable. The air was speaking. At least, that's what it felt like. The voice resonated everywhere around us, every corner of the earth, even within our own lungs. `` We are coming. We will be in contact.'' The voice was deep, with a remarkably fluent grasp of English. Preparations broke out immediately, preparations for war, attempts to train diplomats and leaders about what our best idea of `` intergalactic cultural competence'' was, conspiracy theories, Area 51, Roswell, the whole nine yards. 
 
 That was 50 years ago to this day. No other pulses, no spaceships in the sky, nothing. All we have is that promise made to us with our own air: `` We are coming.'' The conspiracy theorists have raged on and on, but I still think that somewhere, something is coming for us, and I'm not sure whether to greet them with open arms or to be terrified of the damage they can cause. I can ’ t tell you what to think, but I worry for humanity, whenever they decide to contact us again. You should too. 

