SpaceShipOne and White Knight were on display at the 2005 EAA Airventure. White Knight was in the process of delivering SpaceShip One from Mojave, California to the National Air and Space Museum in Washington, D.C., where it is currently on display.

On display in the Research and Development Gallery at the National Museum of the U.S. Air Force. The Air Force Research Laboratory (AFRL) produced a Pulsed Detonation Engine (PDE) in the 2000s using off-the-shelf automotive components. Shockwaves from controlled detonations of the fuel-air mixture provided a peak thrust of about 200 lb at around 125 decibels through four tubes at the back. After AFRL's five-year joint effort with Innovative Scientific Solutions Inc. (ISSI), Pete Siebold flew the first manned PDE flight in this modified Rutan Long-EZ "Borealis" on 31 Jan 08 at Mojave.

The Proteus is a high altitude research platform, which can carry different types of payloads, it is seen carrying the Multi-Platform Radar Technology Insertion Program (MP-RTIP), an USAF project led by contractor Northrop Grumman to develop the next generation of airborne air-to-air and air-to-ground radar systems. Proteus can reportedly be operated remotely from the ground, but for this test flight a crew was on board.

A weird aircraft design, very unusual to the eye. Proteus is a high altitude research platform, which can carry different types of payloads, it is seen carrying the Multi-Platform Radar Technology Insertion Program (MP-RTIP), an USAF project led by contractor Northrop Grumman to develop the next generation of airborne air-to-air and air-to-ground radar systems. Proteus is able to stay airborne for quite a long time and enjoyed the company of a chase plane (Piper Cheyenne) on this day.