Joe mentally massaged the waning motor of the massive monolith.

"C'mon. C'mon!" the frazzled bus driver pleaded beneath breath wreaking of black coffee and Winchell's finest.

(3) The Roswell Crash, 7/2/1947 where allegedly an extraterrestrial space craft crashed in the desert near Roswell, New Mexico.

With these dates in mind, it seems that the detonation of the first atomic bomb, which sent out seen and unseen radiation into space, caught the attention of extraterrestrial beings from beyond our solar system, which signaled that the human civilization had become capable of producing weapons of mass destruction. The Trinity test also made them aware that not only were we now able to destroy ourselves, but also may soon become capable of interstellar space travel as well in the coming centuries.