Jobs returned as interim CEO in 1997 after Apple, then in financial dire straits, purchased a computer company he created called Next. He led the company through a remarkable upswing that included the launch of such popular products as the iPhone, iPad and iPod. He battled pancreatic cancer in 2004 and underwent a liver transplant in 2009 after taking a leave of absence for unspecified health problems. He took another leave of absence in January _ his third since his health problems began _ and resigned in August, handing the CEO job over to his hand-picked successor, Cook. His death came a day after Apple Inc. announced its latest iPhone, the 4S. In the service honoring his life, CEO Tim Cook kicks things off, addressing an overflowing crowd of hundreds of Apple employees both on the ground and peering off balconies of surrounding buildings. Also in the audience was Jobs' wife, Laurene Powell Jobs, wearing a black shirt and dark sunglasses.