NASA Gulfstream Jets fly over the San Jacinto Monument

NASA’s Gulfstream III and Gulfstream V fly over the San Jacinto Monument just outside of Houston on Aug. 28, 2018. The two planes have been modified to support a variety of human spaceflight and scientific missions, including activities such as the astronaut direct return mission as mapping lava flows from active volcanoes and measuring the levels of ice melting at the Earth’s poles. The photo was taken from one of NASA’s T-38. Credit NASA/James Blair