In 1990, Kiffmeyer left the band to attend college. Billie and Mike were faced with the task of finding a new drummer. They knew the perfect fit, Tre Cool, a Gilman Street veteran, who was then playing in the Lookouts!. Later, Sweet Children was renamed Green Day. Before they knew it, they were traveling all over the country in an old bookmobile with Tre’s dad at the wheel. They did all this with little money and staying at fans’ houses. It was in Minneapolis in 1990 that Billie first laid eyes on his future wife, a girl named Adrienne Nesser. They dated for some time and then were married on July 2, 1994, a 5 minute ceremony. The day after their wedding, Adrienne found out she was pregnant. Their son, Joseph Marciano Armstrong, was born in March 1995. Three years later on September 12, 1998, another boy, Jakob Danger was added to the Armstrong family. Today, Billie, Adrienne, Joseph, and Jakob reside in Berkeley, California.