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
Lockheed Martin jet. Lockheed Martin is currently developing the F-35 Lightning II and leads the international supply chain, leads the team for the development and implementation of technology solutions for the new USAF Space Fence (AFSSS replacement), and is the primary contractor for the development of the Orion command module. The company also invests in healthcare systems, renewable energy systems, intelligent energy distribution and compact nuclear fusion. Merger talks between Lockheed Corporation and Martin Marietta began in March 1994, with the companies announcing their $10 billion planned merger on August 30, 1994. The headquarters for the combined companies would be at Martin