The U2 can climb to well over 70,000 feet, making it an important asset in the effort to find and destroy senior ISIS fighters.
The flight suits worn by U2 fliers resemble astronauts' space suits.
The "Dragonlady" is a Cold War-era plane that has been flying since the 1950s.
The compression suits are cooled to keep the pilots from suffering heat exhaustion.
U2s are difficult to land, with landing gear aligned like the wheel of a bicycle.
The pilots fly missions of about 10 hours.
The flight suits protect their wearer at high altitude.
The U2 is just one tool in used in airborne surveillance aimed at destroying ISIS.