Actually, you can spot more than five U-2 Drangon Lady aircraft in this cool image
Beale Air Force Base, home of the 9th Reconnaissance Wing, north of Sacramento, hosts the last U.S. Air Force’s U-2 Dragon Lady spyplanes.
The image in this post shows five of them (along with two more U-2s whose tails appear right and left of the lined aircraft) in front of one of the base hangars.
U-2s, which are often deployed across the world, require some special landing assistance by chase car driven by experienced pilot who talk their colleagues aboard the U-2s during (take off or) landing: since the pilot’s view on a Dragon Lady is obstructed by the airframe, chase cars drivers provide additional information about distance to touchdown and altitude in order to make landings less tricky.
Also based at Beale AFB are RQ-4 Global Hawks drones, which require the same kind of landing assistance by chase cars.
Image credit: U.S. Air Force