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 Stalker day. Several potential foreign sales are under negotiation, with customers and numbers of systems being undisclosed. Lockheed also revealed that they plan to continue testing the laser-charged Stalker. The current laser apparatus, built by LaserMotive, is about the size of a horse trailer, and they are working to reduce its size to something that can be used for tactical operations. Ideal size is about the same as "two travel suitcases put together." Lockheed Martin Stalker The Stalker is a hand-launched, electrically powered unmanned aerial vehicle developed by Lockheed Martin Skunk Works for an unspecified customer, presumably United States Special Operations