Bill Gates away half of its value, as detailed in "The Power of Half". Gates and his wife invited Joan Salwen to Seattle to speak about what the family had done, and on December 9, 2010, Bill and Melinda Gates, and investor Warren Buffett signed a commitment they called the "Giving Pledge." The pledge is a commitment by all three to donate at least half of their wealth over the course of time to charity. Gates has also provided personal donations to educational institutions. In 1999, Gates donated $20 million to the Massachusetts Institute of Technology (MIT) for the construction of a
USS Thomas S. Gates western Mediterranean. She then underwent a period of maintenance in Marseille, France (11–22 October) before she participated in Exercise National Week (24–31 October), during which she conducted turnover with her relief, the cruiser at Pollensa Bay, Majorca (29 October). Out-chopping to Commander, 2d Fleet, on 31 October 1989, "Thomas S. Gates" then conducted her return transit to Norfolk (31 October-10 November 1989). From 15 August 1990 to 28 March 1991, "Thomas S. Gates" deployed in support of Desert Shield and Desert Storm. With only five days of intensive preparations, "Thomas S. Gates" deployed as an element of the battle group