Ground crew members make final preparations on NASA Armstrong Flight Research Center’s ER-2 aircraft at Edwards, California, on Thursday, Aug. 21, 2025, ahead of a high-altitude mission for the Geological Earth Mapping Experiment (GEMx). The pilot will soon board the aircraft, which can fly at altitudes up to 70,000 feet.

Ground crew members make final preparations on NASA Armstrong Flight Research Center’s ER-2 aircraft at Edwards, California, on Thursday, Aug. 21, 2025, ahead of a high-altitude mission for the Geological Earth Mapping Experiment (GEMx). The pilot will soon board the aircraft, which can fly at altitudes up to 70,000 feet.

NASA Armstrong Flight Research Center’s ER-2 aircraft taxis at Edwards, California, on Thursday, Aug. 21, 2025, ahead of a high-altitude mission supporting the Geological Earth Mapping Experiment (GEMx), which requires flights of up to eight hours at approximately 65,000 feet altitude.

Crew members reattach the nose cone of NASA’s Armstrong Flight Research Center’s ER-2 aircraft at Edwards, California, on Thursday, Aug. 21, 2025, ahead of a mission for the Geological Earth Mapping Experiment (GEMx). The aircraft’s nose houses key science instruments used to collect data during flight.

Francisco Rodriguez (aircraft mechanic) services liquid oxygen or LOX on the ER-2 during the Geological Earth Mapping Experiment (GEMx) research project. Experts like Rodriguez sustain a high standard of safety on airborne science aircraft like the ER-2 and science missions like GEMx. The ER-2 is based out of NASA’s Armstrong Flight Research Center in Edwards, California.

NASA Armstrong Flight Research Center’s ER-2 aircraft lifts off from Edwards, California, on Tuesday, Sept. 23, 2025, in support of the Geological Earth Mapping Experiment (GEMx). The high-altitude science aircraft operates between 20,000 and 70,000 feet. For this mission, pilots flew at approximately 65,000 feet, requiring them to wear specially designed pressure suits.

Crew members prepare NASA Armstrong Flight Research Center’s ER-2 aircraft for flight at Edwards, California, on Tuesday, Sept. 23, 2025, in support of the Geological Earth Mapping Experiment (GEMx). The high-altitude science aircraft operates between 20,000 and 70,000 feet. For this mission, pilots flew at approximately 65,000 feet, requiring them to wear specially designed pressure suits.

From the window of the ER-2 chase car, a crew member gives a thumbs up to the pilot as NASA Armstrong Flight Research Center’s ER-2 aircraft taxis at Edwards, California, on Thursday, Aug. 21, 2025. The gesture signals a final check before takeoff for the high-altitude mission supporting the Geological Earth Mapping Experiment (GEMx).

Suited up and ready, ER-2 pilot Kirt Stallings waits inside the transport vehicle at Edwards, California, on Thursday, Aug. 21, 2025, moments before boarding NASA’s Armstrong Flight Research Center’s ER-2 aircraft for a high-altitude mission supporting the Geological Earth Mapping Experiment (GEMx). Through the vehicle window, the aircraft can be seen being readied for flight.

A crew member handles liquid nitrogen servicing for NASA’s Armstrong Flight Research Center’s ER-2 aircraft at Edwards, California, on Thursday, Aug. 21, 2025. Liquid nitrogen is used to support key science instruments for extended flight durations in critical research missions, such as the Geological Earth Mapping Experiment (GEMx), which requires flights of up to eight hours at approximately 65,000 feet altitude.

Crew members prepare NASA Armstrong Flight Research Center’s ER-2 aircraft for flight at Edwards, California, on Tuesday, Sept. 23, 2025, in support of the Geological Earth Mapping Experiment (GEMx). The high-altitude science aircraft operates between 20,000 and 70,000 feet. For this mission, pilots flew at approximately 65,000 feet, requiring them to wear specially designed pressure suits.