Lockheed Martin is a respected name in the field of Aeronautics, electronics, information and space systems. The company has recently made yet another breakthrough airship and has named it HALE-D. The word HALE-D is an acronym and stands for high altitude long endurance demonstrator. The blimp is actually a big robot airship and is designed to operate at the altitude of 60,000 feet. The airship is powered by a series of photovoltaic cells.

The blimp works by floating up above the jet stream and then with the help of its motors it anchors itself at one place, offering a view of over 600 miles, and then helps in providing warnings about short and long range missiles, surveillance and target redemption, communications, environmental monitoring and everything else which a satellite is expected to do.