Following the death of Walt Disney in December 1966, the leadership of his empire, including Disneyland and the ongoing "Florida Project" (Walt Disney World), fell to his older brother, Roy O. Disney. Although Roy had been planning to retire, he postponed his departure to oversee the completion of his brother's vision. Roy took on the role of CEO and President, ensuring that the creative and financial integrity of the company remained intact during a period of immense grief and uncertainty. One of his most significant acts was insisting that the Florida resort be named "Walt Disney World" so that everyone would know it was Walt's dream. Under Roy's steady hand, the company successfully opened the Magic Kingdom in 1971. After Roy's death in late 1971, leadership transitioned to a team of executives including Donn Tatum and Card Walker, who had worked closely with the Disney brothers for decades. This period also saw "The Walt Disney Strategy" being carried out by the legendary "Imagineers" who continued to expand Disneyland according to Walt's master plans.