Lockheed Martin SR-72 have the same range, with entry into service by 2030. The SR-72 follows the US Air Force's hypersonic road map for developing a hypersonic strike weapon by 2020, and a penetrating ISR aircraft by 2030. At the time of the concept's unveiling, Lockheed Martin had engaged in talks with government officials, but has not secured funding for the demonstrator or engine. On 13 November 2013, Air Force Chief of Staff General Mark Welsh revealed that the service was interested in the SR-72's hypersonic capabilities, but had not spoken with Lockheed Martin about the aircraft. Its high speed appeals to the
General Dynamics corporation's subsidiaries are donors to the Canadian Defence and Foreign Affairs Institute. General Dynamics General Dynamics Corporation (GD) is an American aerospace and defense multinational corporation formed by mergers and divestitures. It is the world's fifth-largest defense contractor based on 2012 revenues. The company ranked No. 99 in the 2018 Fortune 500 list of the largest United States corporations by total revenue. It is headquartered in West Falls Church, Fairfax County, Virginia. The company has changed markedly in the post–Cold War era of defense consolidation. It has four main business segments: Marine Systems, Combat Systems, Information Systems Technology, and Aerospace.