This article dated 18 Nov 2019 from The Aviationist should interest the same audience and saves resurrecting an ancient U-2 thread.
We Tell You The Story Behind This Extremely Rare Two-Ship U-2 Dragon Lady Formation Flight
A U-2 Dragon Lady flies over California at nearly 70,000 ft., Mar. 23, 2016.
U-2s are home based at the 9th Reconnaissance Wing, Beale Air Force Base, California.
(U.S. Air Force photo/Staff Sgt. Robert M. Trujillo)