U.S. Department of Homeland Security in the context of "Homeland security"

An aerostat (from Ancient Greek ἀήρ (aḗr) 'air' and στατός (statós) 'standing', via French) or lighter-than-air aircraft is an aircraft that relies on buoyancy to maintain flight. Aerostats include unpowered balloons (free-flying or tethered) and powered airships.

The relative density of an aerostat as a whole is lower than that of the surrounding atmospheric air (hence the name "lighter-than-air"). Its main component is one or more gas capsules made of lightweight skins, containing a lifting gas (hot air, or any gas with lower density than air, typically hydrogen or helium) that displaces a large volume of air to generate enough buoyancy to overcome its own weight. Payload (passengers and cargo) can then be carried on attached components such as a basket, a gondola, a cabin or various hardpoints. With airships, which need to be able to fly against wind, the lifting gas capsules are often protected by a more rigid outer envelope or an airframe, with other gasbags such as ballonets to help modulate buoyancy.

The New York Institute of Technology (NYIT or New York Tech) is a private research university with two main campuses in New York, one in Old Westbury, on Long Island, and one on the Upper West Side in Manhattan. The university was founded in 1955. In addition to its main campuses, it has a cybersecurity research lab, a biosciences and bioengineering lab, Nassau County's first Class 10,000 clean room for nanoengineering, and the Entrepreneurship and Technology Innovation Center, which has close links to NASA, in Old Westbury, as well as campuses in Arkansas, China, and Canada. The U.S. Department of Defense and the U.S. Department of Homeland Security designated NYIT as a National Center of Academic Excellence in Cyber Defense Education.

NYIT has over 100 undergraduate and graduate degree programs. It awards bachelor's, master's and doctoral degrees for the completion of these programs. It has five schools and two colleges, all with an emphasis on technology and applied scientific research. NYIT's 2025 Carnegie Classification has been designated as a Mixed Undergraduate/Graduate-Doctorate Medium.