This is the third video in Les Guthman's Advanced LIGO Documentary Project -- an eight-part series on LIGO's historic discovery of gravitational waves and the birth of the new age of gravitational wave astronomy. In August 2017, LIGO and its Italian partner, VIRGO, made a discovery as important as its historic first detection of gravitational waves in 2015. They detected gravitational waves from two colliding neutron stars, which ejected a spectacular gamma ray burst that was seen by seven space-based telescopes and dozens of astronomical observatories on earth. It was the long dreamed-of marriage of gravitational wave astronomy with conventional astronomy, and the results were spectacular.